A revision of the temperate Australian gobiid (Gobioidei) fish genus Tasmanogobius with a comment on the genus Kimberleyeleotris

16 Pages·1991·0.78 MB·English

by  D. F. Hoese

30 September 1991
Memoirs ofthe Museum ofVictoria 52(2): 361-376 (1991) ISSN 0814-1827
https://doi.org/10.24199/j.mmv.1991.52.13
A REVISION OF THE TEMPERATE AUSTRALIAN
GOBIID (GOBIOIDEI) FISH GENUS TASMANOGOBIUS
WITH A COMMENT ON THE GENUS KIMBERLEYELEOTRIS
By Douglass F. Hoese
Australian Museum, PO Box A285, Sydney South, NSW 2001, Australia
Abstract
Hoese. D.F., 1991. A revision ofthetemperateAustralian gobiid (Gobioidei) fish genus
TasmanogobiuswithacommentonthegenusKimberleyeleotris. MemoirsoftheMuseumof
Victoria 52: 361-376.
Twonewspeciesofthegenus TasmanogobiusaredescribedfromTasmania,Victoriaand
SouthAustralia.Thetypespecies. T. iordi,knownonlyfromTasmania, isredescribed.The
three species are separated on the basis offin-ray counts, colour and scale coverage. The
species live in estuarine and sometimes freshwater environments, typically over mud or
sand. At least onespecies occupiesburrows. One species shows considerable variability in
coloration and meristic features.
leyeleotrishutchinsi). The correct figure forthat
Introduction
species is illustrated here (Fig. 1). It should also
Only a small percentage of gobioid fishes benotedthatthegenuswasincorrectlyspelledas
occursin temperateregions. Thelargestconcen- Kimberleotris on page 36 of the same publi-
trationofgobioidgenera,restrictedtotemperate cation.
regions, occurs in the north Pacific from Cali-
forniatoJapan. KoreaandChina,withabout 20 Methods
genera (of 270 recognised genera within the
suborder) confined to this region. Few genera Counts and measurements largely follow
are restricted to temperate regions of South those given by Hubbs and Lagler (1958). The
Americaand northern Europe. In Australiaonly longitudinal scale count was taken from behind
three genera (Nesogobius, Tasmanogobius and the pectoral base to the end ofthe caudal ped-
the eleotridid Thalasseleotris) have their great- uncle and is a count ofscale rows, ratherthan a
estconcentration ofspecies inextremesouthern straightlinecountsincethescalesare irregularly
Australia (Victoria, Tasmania, South Australia developed anteriorly. In Tasmanogobius the
andsouth-westernWesternAustralia). Although analspineand spineintheseconddorsal fin may
about 30 ofthe 400 gobioid fishes known from bepresent orabsent.Totalelementsin thesefins
Australiaoccurinthisregion,overhalfbelongto refers to rays and spine (if present). Vertebral
widespread tropical Indo-Pacificgenera,suchas counts were determined from radiographs and
Favonigobius and Pseudogobius. These tropical cleared and stained material and include the
genera have onlyoneortwo species each occur- urostyle. In descriptions, data are presented as
ringintheregion,although most ofthesespecies the count followed by its frequency in paren-
are restricted to temperate Australia. theses. The osteology was studied from trypsin-
The three species of Tasmanogobius are prepared cleared material stained with alizarin.
knownonlyfrom Tasmania, Victoria and South Much ofthe material was in poorcondition and
Australia. Ofthe nine known species ofNesogo- data are given only from those specimenswhere
bius, all occurin Victoria and only two range to accuratedatacouldbeobtained.Thepapillapat-
New South Wales and Western Australia. Re- terns were drawn from well preserved material
lationshipsofTasmanogobiusareuncertain,but andclearedandstained material,usingacamera
thegenusissuperficiallysimilartothesympatric lucida for basic drawings. The patterns are a
genus Nesogobius, which differsfromtheformer composite ofseveral specimens, since all papil-
in having 13 segmented caudal rays. lae are rarely discernible on a single specimen.
Hoese and Allen 987) illustrated the papilla All fish sizes refer to standard length (SL). Sex
pattern of Tasmano(g1obius lordi. The captions wasdetermined fromtheshapeoftheurogenital
had been mixed (incorrectly labelled Kimher- papilla.
361
162 I) i 1101 si.
mm
3
Figure i Head papilla pattern ol Kimberleyeleotrh hutchinsi, based on bolotype and several paratypes
I in- pterygiophore Formula follows Birdsong elongate without ventral process extending over
(1975), The papilla pattern terminology follows quadrate; basihyal broad and spatulate; a single
I loese ( i(>x !). The Iype oflines is designated by epural; neural arches reduced, wiihoui a pos-
twoletters,the firstgivingtheorientationofthe terior connection to centra (Fig. 2) in '/'. lordi
line (V vertical, L longitudinal, r nans and juvenilesofotherspecies, posteriorconnec-
verse) and the second the orientation of the tion of neural arch to central, when developed,
papilla axes in relation to theaxisofthe line(l usuallyconfined to precaudal vertebrae; 2 ptery-
axisalongthepapillaline,T axisal righi angles giophores precede firsl haemal arch.
to axis of Inn'). I lead Papilla Pattern.(Figs 5, Sand 8). (heck
wiih 5 (in /. lastiand T. gloveri) or6 (in /'. lordi)
Tasmanogobias vr lines extending ventrally from eye; second
SDiinagmniosriosu,n(dleedneiinadl,orIslaeladvimeowi;es-toerepleisnssirdoeunvdieedw., afonudrtthhiarnddlifnieftshn(oiln r/'e.alcahstiinagnddors/algllyovteorie)yeo;rffiirfstth,
o(nrillinoiup'einfiancge iocfsifiiriscttaerdchtoapnedctootrhaeli baarsceh.esRaukneorss- alinndessiixntchom(pilnet/'e.,loirndtie)rrruepatcehdinbgyeyuep;pelrastlonIgoirtu2-
sified, simii and papillate. Pelvic ims fused into dinal (IT) line. Preopercular-mandibular series
Composed ofan inner II line and an outer T
a large cup shaped disc rongue tip truncate to I
sfluisgehdtlybeemtawregeinnateyee.s.I leNaod caanntaelrsi,oiwhiennteprroersbeitnatl, tlienrei,orbeonthd onfojramwasl.lyBeihnitnerdruepyteed2 tjrusatnsbveelrosew(pToTs)-
pore. Scales on sides ofbelly vertically elongate. lines (in I lasti and /'. gloveri) or l (in T. glov-
Second dorsal and anal tins long based, much eri); 2 longitudinal (IT) lines dorso-medial to
slponigneetsVt]hanVIcIaIu;dsaelcpoenddudnocrlsealleenlgetmh.enFtisrst d[o,r1s3al tlirnaensdvoerrssaelllyindeis.sjAunnctteriforrolmy voenntorpaelrVcuTlulimnea. VIIT'
i116(2>,; a21n;alseeglmeemnetnetds cau1d,al12rayi<s>;Ip/e;cvteorrtaelbrfaine-r2a6ys olliipnneeers;caubslohuvomret,doIirn1staellrirnmeuaprdtegedivnelbooyfpe2pdrseahoboproetvrecturplaonussmlveerarinsode-
Osteology, No bony connection between dorsal margin ofoperculum.
symplectic and preoperculum; metapterygoid Remarks. Vertically elongate scales and reduc-
REVISION OF THE GOBIID FISH GENUS TASMANOGOBIUS 363
B
FAig-urTe. 2gloSveecdt,io2n6omfvmertSeLb;raBl=coTl.ulmonrdio,f237spmecmiesSLo;fCTa=smTa.nolagsotib,iu21s,mbmaseSdL.on cleared and stained specimens.
364 D. F. HOESE
tionofneural archesarealsocommontoatleast foundonlyintheshapeoftheurogenital papilla.
some species of Nesogobius. In malesthe papilla is slenderand elongate, and
Several meristic features of the species are in females it is short and rounded.
given in Tables 1-5. Sexual dimorphism was
Key to species ofTasmanogobius
First dorsal fin VI; pectoral rays 19-21; total anal elements usually 12-
13:bodywith a whitish longitudinal stripe, interrupted by short vertical
bars T. gloveri sp. nov.
First dorsal usually VII-VIII; pectoral rays 16-20 (rarely 20): total anal
elements usually 14-15; body without stripe, but with thin vertical
bars
2
Head pores present; first dorsal usually VIII; second dorsal and anal
spine frequently present; body extensively scaled, scales usually contin-
uous, sometimes broken into a patch behind pectoral fin and a second
patch on body; posteriorscalesextending forward at least tojust behind
second dorsal origin j. lasti sp. nov.
No head pores; first dorsal usually VII; second dorsal and anal spine
rarely present; scales confined toa patch behind pectoral fin and a patch
on caudal peduncle j
[orcjj
Tasmanogobius gloveri sp. nov. rakerson outerfaceoffirstarchtriangular, raker
Figures 3 and 4 at angle of first gill arch slightly shorter than
upper gill filaments. First dorsal "fin long based,
with membrane connecting to base of second
Tasmanogobius sp. 1.—Last, Scott and Talbot dorsal fin origin. Bodymoderatelvrobust, depth
t1r9a8li3a:).453, fig. 30.132 (Tasmania and South Aus- at anal origin 14.4-18% SL: depth at pelvic ori-
gin 16.2-20.5% SL. Body light brown with a
Materialexamined. Holotype. SouthAustralia.Amer- whitish midlateral stripe, broken by short verti-
aicnadn 1R0ivMera,rK1a9n7g8ar(oAoMSIsl1a.n2d0.17D9.-0H2o5e.se34anmdmpaSrLt)v.. 8 ocanlcbhreoekw.n bars. Five vertical (VT) papilla lines
Paratypes. South Australia. Type locality. AMS
1.20179-003, 14(21-34) and AMS 1.20179-026,
Sr21o(9Ao25M34-:I2sFS6l.a)5An.0dM8c,4l.eFSa.1Ar5(e0M4d803)a,,Fn.dH15.(0s3Mt82a.2)i,,nCeoHd1o..(p3MeP4.)er.l;CioScHoa.ApnMeM.Lra,FgC.o4o5oo0An8pu.5eg,rK,a41(n9A3g5p2a7-r:- dpDoehrsoscrraeilpftfoiinromnw.uiltahFi3r1s(3t1-21d25o1r0es)laleimnef9nintssp,VeIc((iu4sm6ue)a,nlsl.pytSe1er4y)c,goinaold-l
42). H.M. Cooper. 13-18 Aug 1958; SAM F.5086. rays segmented. Anal fin with 12-14 elements
6(33-44), H.M Cooper, 13 Aug 1958: SAM F.5087. (usually 13), all rays segmented. Longitudinal
13(24-34), H.M. Cooper, 14 Apr 1959. scale count 38-47. Gill rakers on outer face of
Tasmania. Parsons Bay, AMS 1.28791-001, 2(40- first arch 1-4 + 6-7 = 5-10; lower rakers 6(3),
40),P.Last,Nov 1978. D'EncastreauxChannel,NMV 7(1); total rakers 8(1), 9(1). 10(2). Segmented
QA.V77M70, 1(39). P. Last, 1974. Greens Beach to Kelso. caudal rays 17(45). Branchedcaudal rays 12-15.
Island,43T9M, 5D(.1250-2522)-.D.R2.0G5r3e,en2.(228-829J)a,nD1.9F6.7.TuGrrneeern usually 13-15: upper unsegmented caudal rays
7(2), 8(3),9(4), 10(2);lowerunsegmentedcaudal
21 Jul 1948.
001V,ict1o(r3i4)a,. AC.riRbobPeoirntts,onW,es3t0erMnayPor1t9,75A.MS 1.19783- rayHsea8(d2)l,e9n(g3t)h,2160.(65)-.34V.er0t%eSbLr.aeEy1e1 a+bo1u5t(e20q)u.al
tosnout in adult. Anteriornostril atend ofshort
Diagnosis. First dorsal fin usually VI. Vertebrae tube, about midway between upper margin of
usually 12 + 15. Pectoral rays usually 19-21. No upper lip and eye, about 2 nostril diameters
head pores. Body partly scaled with cycloid above upper lip. Posterior nostril with raised
scales; no scales ventrally on belly, narrow area rim, immediately before anterior margin ofeye
immediately behind pectoral base and area and above anterior nostril. Gill opening re-
before a line from behind middle of pectoral stricted to pectoral base. Teeth in upper jaw
base to below posterior end of first dorsal fin; conical and close-set in outer row, 1-2 inner
scales on sides ofbelly vertically elongate. Gill rows ofsmallerteeth anteriorly: lowerjaw teeth
REVISION OF THE GOBIID FISH GENUS TASMANOGOBIUS 365
,,|ttt»- I'Mli
+ k%* **
"»»I#|H
A _
wJ^wmm
- v.J -»»*y
%
,i^
I 1 1 1 1 • • •J.
mm
2
Figure 3. Head papilla pattern of Tasmanogobiusgloveri, based on holotype and several paratypes.
Figure 4. Holotype of Tasmanogobiusgloveri, AMS 1.20179-025, 34 mm SL.
similar to upperjaw teeth, but with outer row upperjaw in line with orbeloVw^lojwenrtmaorgfisnMof
rbaeoneSulgrnhodweOmdm"o.i2rd0Medol2wue'5tio?dhfel-shesmevhate.lblioMnadenyanddtuaaloxltbi;lsifj^qrapuewepsn;eurfrmeomaralcmrohigwiningnganatodnof eaefyraxecct.eheenTosdfoinfniwggrisuttoehnatrtocinphuphewmaimertaryhrongusgmlesaeantldsese,.mrgaiolslsirf*aikee?drsr^oodn*aon™utte£err-
166 I) I HOI SI
iorly, with slightly expanded posterior ileshy Materialexamined. Holotype. Victoria, Princetown,
section; rakers curving into oral cavity; rakers G. Backhouse, I'-»«i iams [.22950-001, 28.7 mm
slightlyshorterthan Blamenl length, Bodyscales SL)
ctenoid, Pectoral base, prepelvic area and mid- Paratypes. SouthAustralia. Vivonne Hay, Kangaroo
brmeealarlcgyhiinnn.agketPdoe.cptoFoiirrnaslli Idfnoi-rnlsoawwli0t1fhinjuwrsilotuhbnedlyeoodwndrmoBaurengcdioennd,d apInsaldnanvpd.a,.r'taAMy,maMrsS21M91a7.8i2;01Ai5lM>87SX0;012S.i,2.u0i41l(5iw19i9.-(s)2i(4)4)R,,i1vI(e)2r.6,)H,KoDae.nsgeHaoraeonsode
dorsalorigin. Pelvic finsfused toform largecup pIasrllayn,d,6 Mai 1i927081. 70 005, 4(19 24), D. Hoese and
shaped disc, reaching anus. Tasmania. Southern region, AMS [.28971 001,
( oioui of fresh material, Head and body 1(27), cleared and stained, P. Last, Browns River
awhnidtitshhintoggrreeyy lHienaesd awnitdh smciantutteeredspwohtist.eOffletcekns ews.tuaIrvya,ntAsoMffS, i30i 7N5o46v 0109472.llGIa!wl2e8)r, eI)s.tuHaoreyseAaMnSd
prominent black stripe extending posteriorly 1.22535-001, 70(16 18) and AMS [.22535 007,
from mideye tocaudal peduncleabove midside. 9(16 21),clearedandstained), D. HoeseandG, Allen,
lVcioi.il base with distinct vertical brown or 19 Feb 1981. Moulting Lagoon, AMS 1.22563-001,
gbhorrleolyywnbarMb,iadrlBsiondbeyelowofiwthbpoedIcyto5rwatilhtihnfindv,iesrttviiecnnactltraglslrujebycoutn-o LI1'asi9sl71ta86,n,d,O4A0crA)lt,Mhu1SPr9,s719l.Ra2isv2Nte5,ir6e,7r5iAn0JMnu0la1S,,C1Cr2.ae(2e3m2k8e5,r68o1A9n)M0s,0SP1,I,n1lL.e3at2(s,24t05,F7l204i-15n)0Jd,0eu1rPn,,s
tinaoneuonusmawrignikn-s;stwrhiipet,esbtorridpeeriendtebryrutphtiend bgryetyhitno 11.(3288)7,94I 00W1a,lkle(r3,1)2,6R.ABuulgte1r9m7o4re,Hu[9oJnulRiv1>e7r7, DAuMcSk
vertical gray to brown bars; firsi below second River, ams i 28795 001, 2(26 27), P. La1st, 17 Feb
dorsal origin, second below anterioi pari of 1978 Big Waterhouse Lagoon, ams 1.28796 001,
second dorsal fin, third lu-iow middle ofsecond N !0 !5), R. Mawbey, 2 May 1979. Patriachs Inlet,
gedfironferdtyshaollofinnfeicnsma,iuadfdbodaoullrvetephoemfdniuecdnaasicuilddeeea,n,ldDp[ooeiwrdossuaenltccholifnenidnsahdnotodrrriasznalasolspniatfriaan-lt, iiH5fai21Fnn88ed78be910r99017s9870I0.70s0;l11Ya,.anedlmtl1(s(o3t30w2M1).,SR129o8)1c,P7.,k92P88L7RaL90isa70vts1e,t,r,0,099!1(K3,2i2F2kn-(eug22ba82)I1,s19l197P5a78.)n8d;L,PaAsntAadL,aeMmsr2Sst-9
aewnhntidtteobrsttorraaidnpeselrusecsreuinebtsmaworifgtehilnotanhlgiantwebhlibatlceakcksdtirssitppaoelt;smabfreoglriomnw 0s207o)1n,,sAC1nr0de(ee1kr8,so!nr3sa)mCaQrreVeRkMi,ve42r43,0A.\2pMi9S(111977152;868)N70I-2a03i01KS,p.Ir1221(59187205---
ing l S dark longitudinal lines, alternating with SAM l 6676, ion 1 25), 23 Apr 1975; WAM
ggapnrromaeesirjjtrerobwsiawtiosrtariwhllphlyeyi;s,tcbemaaAtasnstrateaglrrlliieypnd,ehsnb,selmxaCalpcalaakrlugndedtbaloilylnagcgrwfkehiynio.stnteptr,oPoaetncsostfwlocthureeocannleltnerwtaailnftltidhyno CRRMPii.aSvvV3xIeei0rrcRO,,tOOo1r8HC9Ii71SaM8,o9Io8RDiHO,.2Oo2pl0p1Hlo5o0iIa(7s.n2,9i0dt8Ise13((31237LB50)))ac1,,,rn2Prd3i01ie2nLD,dgaVaos,pltc2ie,(a2MI18R9m9ae67sr0s51.e,31r)9,v1D7e.a9,P1v..6e9DDyL7eea5srrR—twwi,0eve1enn01rll0
pelvic fins transluceni with scattered minute 1(26), I). Hoese, 2 Mai 1972 BruthenCreekestuary!
wInk- spols. south-east Oippsland.AMS 1.22944 002, 19(30 19),
heaCdo,loubrodiyn aalncdohoflinsas biencofrmeisnhgmabtreroiwanl, abnudi .116)B,eJ.umBeeru,me1r,912\in\-ug1917997;9;AMNSMV1.A2.23924565,0025(31-!3(332),
opaque. J Beumer, !0 lul 1979; NMV A32S6, !0(22 41), J.
Beumer, 5 19 Jul 1979, Princetown, AMS 1.22950
Distribution and ecology, Tasmanogobius glov 001, 8(n26mv12), G Backhouse, 1981. Lower Barwon
eri occurs in estuarine and marine muddy envi- River, A.7691, 1(21), Victorian Fisheries and
orTvoacnsimmeasnnoiitlas,mfutrdhoemsKpeacnigeasrwoaosiosblsaenrd,veVdicitnobriinalaonwds WIPhiailkldclliipMf,oenNiDMbeepVaornAtgm,e1nn25tm3,,v31(J\3u1l)1,516J98.8,7W,iat7H(so2ob5ns,o2n8I)s,MVBaiaycyt1o9rP7io2art.n
Fisheries and Wildlife Department, 25 Mar 1980
Etymology. Foi J. Glover, Curatoi ofFishes ai Barham River, nmv V3569, 5(34-36). Victorian
the South Australian Museum. FisNhoenr-itesypaendmaWtielrdilailf.eTDaespmaarntimae.nt,Big1 5IJaugnoolnl>76.\MS
Tasmanogobius last! sp. nov. I\p1i87199373,ooi, 2(23 10), Big I .moon, p, Gaymer 15
Figures 5 <' \ ictoria. Estuary ai PetWersborough, ams 1.16987-
l1i9.i8lh.aIislm4u5n4o,goibn-,iushis1p.332,( raIsmasatn,iaSco.titmi sSooduthlaii\nu.si. 0QBn0aVm9r,Mvha1(m13A39.)7R3,2iS/vi8e5)3.r/,,4I5l4no1,o(ms3e11v)(a,3n3)d\.1,.3RS.K6Hu7C.d,oenGng1ro(le2vee9.t)no,,nG,GrIlIe2e1enNneMoslavgrBRe11ia99cv6h7e3,2r'
REVISION OF THE CSOBIID FISH GFNUS TASMANOGOBH S 567
mm
2
Figure 5. Head papilla pattern of Tasmanogobius lasti, based on holotype and several paratypes.
Figure 6. Holotype of Tasmanogobius lasti, AMS 1.22950-002, 28.7 mm SL.
Diagnosis. First dorsal tin usually VIII. Ver- vicorigin 15.3-16.4%SL. Bodylight brown with
t1e8b.rAate ulseuasatll5yl1a2te+r1al9i.s sPyecsttoermalopraeynshuesuaadllpyor1e7s-. agatscerdieosnofmiddasrikdess;potuss,uaulsluyalwliythveartiscmaalllly bellaocnk-
Body partly scaled; vertically elongate scales median transverse bar or spot just before first
behind pectoral base on sides of belly usually dorsal fin. Five vertical (VT) papilla cheek
continuouswith posteriorbody scales; posterior lines.
scale patch tapering anteriorly, always reaching
well forward ofmiddle ofsecond dorsal fin; rest Description. First dorsal fin VII(9), VIII(90),
ofbody naked. Gill rakers short, outer raker at IX(1); pterygiophore formula variable,
angle of first gill arch much shorter than upper 3(122110) in 2 specimens, 3(1221100) in I,
gill filaments. First dorsal fin long based, mem- 3(1221 101) in 1, 3(1221 1 10) in 15,3(12211110)
bburtanneotfrtoomseencdonodffdiorsrtsadlorosrailgifni.n rBeoadcyhinslgennedaerr,, minat1e, spptienreygoifotpehnorme.isSsiencgonfdrodmorslaasltwoirthpen1u3l-t1i6-
depth at anal origin 13.5-15% SL; depth at pel- elements,(usually 14-15),typicallywith first ray
368 D. F. HOESE
mm
3
Finitgeurroerbi7.taClopmoproes,iPteOheapodstpoorrbeitaplatptoerren,iInFTOamainnforgaoorbbiiutasllpaostrie.,PTNLC- =potsetremriinoarlnalsataelraplorcaenaPlIpOor=e.posterior
unsegmented. Anal ray elements I2-16 (usually length). Body scales largely ctenoid. Pectoral
14), typically with lust ray unsegmented. Longi- base, prepelvic area and midline ofbelly naked;
tudinal scale count 29-47. Gill rakers on outer posterior portion of body completely scaled;
face offirst arch 1-3 + 4-7 - 5-10; lower rakers anteriorly scale coverage becoming reduced,
4(1), 5(7), 6(5), 7(2); total rakers 5(I), 6( 1). 7(2). with naked patch beginning below and near
8(5), 9(2), 10(3). Segmented caudal rays 16(2), front of second dorsal fin, with scale coverage
17(108); branched caudal rays 13-17, usually narrowest between dorsal fins and below pos-
14-15; upper unsegmented caudal rays 8(5), terior end of first dorsal fin, coverage broad-
9(11), 10(4); lower unsegmented caudal rays ening anteriorly near pectoral insertion; belly
7(2), 8(8), 9(9). 10(1). Vertebrae 12+18(11), 12 naked orsometimesscaled on sides. First dorsal
+ 19(67), 12 t 20(1), 13 i 18(1), 13 i 19(2). fin with low rounded margin. Pectoral fin with
Mead length 25.7-28.1% SI.. Eye about equal rounded margin, reachingtoa point below mid-
tosnout in adult. Anterior nostril at end ot'short dle of first dorsal I'm. Pelvic fins fused to form
tube, about midway between upper margin of large cup-shaped disc reaching to below point
upper lip and eye, about 2 nostril diameters just beyond middle offirst dorsal fin, well short
above upper lip. Posterior nostril with raised ofanus.
rim, immediately before anterior margin ofeye Colour of fresh material from Kangaroo
and above and behind anterior nostril. Gill Island. Head and body translucent light brown.
opening restricted to pectoral base. Teeth in Head with numerous scattered melanophores;
upper jaw conical, outer row teeth close-set; thin black barfrom ventral marginofeyetopos-
second rowofsmallerteethanteriorly;lowerjaw teriorend ofjaws. Adiffusegreyspot behindeye
teeth similar to upperjaw teeth, but with outer and similar diffuse spot at dorsoposterior mar-
row teeth more wide-set. Mental frenum indis- gin of operculum; cranium behind eye with
tinct. Mouth small and oblique; reaching to dense subcutaneous concentration of melano-
below middle ofeye in male and belowanterior phores. Body with scattered, irregularly shaped
quarterofpupil in female;jaws forminganangle black spots dorsally; 2-3 vertical black bars
of35-40°with body axis; upper margin ofupper below first dorsal (in, extending onto sides of
jawin linewith middleofeyetolowerquarterof belly; midside with 4 more-or-less rectangular
efUylpeep.sheyTrobnpuagrmutpesotfiepgxitltlreunandrcicahntegestowonitstolhigphnhtualmryyeenrmgoaeuragslisn;samtagielll.l gtlihanir,gredsbeblceaoclnkodwsbpeoptlosos,twefrimriisotdrdbleeelnodowfsosefeccoosnneddcoddnoodrrssaadllorosfriainl-,
rakers on outer face of first arch with slender fin and fourth at posterior end of caudal ped-
ossified rod anteriorly, and with slightly uncle; smaller, vertically elongate or rounded
expanded posterior fleshy section; rakers much black spot, midway between each pair of rect-
shorter than filament length (about one-third angular spots; belly white to silvery. Pectoral
REVISION OF THE GOH1ID FISH GENUS FASMANOGOB1US 369
baselight brown toyellow, with small blade spot with different number of pores ofthe two sides
dorsally near base of tin rays. Fins transparent. ofthe head.
First dorsal fin with small dark spots forming 2- This species differs from other species of TdS-
3 horizontal black stripes; second dorsal with manogobiUS in frequently havinga distinct anal
dark spots forming 3-5 oblique stripes; caudal spine and a spine at the beginningofthe second
fin with 2-4 wavy black bars; anal fin without dorsal fin. About 80-83%ofspecimens havethe
pigment; pelvic and pectoral fin with scattered spines ("fables I, 2).
black flecks. The scale pattern also varies considerably. In
Colour in alcohol similar to fresh coloration, most individuals, the body scales extend from
except that dorsal irregularly shaped spots behind the pectoral basetothecaudal peduncle.
become faint or obscure; back often with scat- Injuveniles, below 20 mm SL and some adults,
tered dense concentrations of melanophores. the scales on the sides of the belly are isolated
The more-or-less rectangular spotson sideoften into a separate patch from the posterior body
oval or vertically elongate. Intensity of dark scales.
markings variable. Geographical variation is also apparent.
I'ariation. Tasmanogobiuslastishowsconsid- Analysis ofvariance was carried out on 6 popu-
erable variation in several characteristics. lations (5 for scale counts): Kangaroo Island.
Females reach and tend to average a larger size South Australia; Hruthen (reek, Victoria; Lake
than males(Table4). Thelargest maleexamined Monibeong, Victoria; Flinders Island, Mass
SisL.36MamlmesSIav..ewrhaiglee2t3h.e5lmarmge,stwiftehma3l1e iosf4t1hemm^7 SEtsrtauiatr;y,TTaamsamraniRai.veSr.pecTiamsemnasnifaromanLdakeCiMawolne-r
examinedsmallerthan 29mm SL, whilefemales ibeong,Victoria,areunusual in havingthescales
average 29 mm SL, with 33 ofthe 63 examined reduced insizeand in havinglessextensivescale
larger than 27 mm SL. The greater number of Coverage, with the posterior scale patch extend-
females is probably related to sampling bias, ing forward tojust behind thesecond dorsal ori-
since collectors and seme nets generally select gin, and an extensive naked area below the
forlargest individuals. Males have intense black anterior halfofthe first dorsal I'm and a similar
pigment, usually forming a black bar between naked patch abovetheanteriortwo-thirdsofthe
last 2-3 dorsal spines. The first dorsal is pale to anal I'm. The anterior scale patch has a few non-
grey posteriorly in females. imbricate scales. Most scales are missing in the
Head pores also vary considerably. Juveniles specimens, preventing accurate scale counts to
ofothergobioid speciesoften have reduced pore be made. All specimens have large dermal para-
patterns, but the variation is high in adults ol site evsts and the scale pattern may not be nor-
tohnilsysopenciseps.ecTihmeensfolgrleoawtienrg tdhiasncus2s4iomnmis SbLa.seAd mpaolp.ulTahtieonscaarleesapopnrotxheimcaatuedlaylhpaelfdutnhcelheeiignhttionsf
composite head pore pattern is shown in Figure scales m specimens from Kangaroo Island.
7. In the most common pattern, individuals Specimens from Kangaroo Island have the lar-
hsnaovuetajupsotstaebroivoer tnhaesaplosptoerreioornnoesatcrhil,siademeodfitahne gceosutntsscal(efsa,blheenIc).eAtnhaelylsoiwsesotflvoanrgiiatnucdeincaolmpscaarl-e
posterior interorbital pore just behind the eyes ing scale counts of the live specific localities,
apantdtearnn iwnafsraforobuintdalinpo2r4eobfeh50insdpeecaicmheneyse.exIaImn-s diinfdfiecraetdedsitghnaitfiscapnetcliymfernosmfsrpoemciKmaenngsarforoomIstlhaensde
sinpeedc.imTehnse bpealtotewrn24wamsmfSoLu.ndInmthealomtohsetr a2lflt ofteahteurrleoscaglaivtieesm(iPx-ed0.0re0s1u)l.tsC.omSepcaornidsodnorosfaolt-hreary
aafaildbanobtustuoeelenrvrtnadoetlsr,(bptciTehaotaecnrabaillplmempreeoocn7rxro)set.peeteIinhsrnfedcarstubtewslyqfepouurnimetcos,na.mptleleItcypnnhiodesrmeioeexnismtnngresfaarriatineohnpresdaobioripvtmetoieeassdrlttumeiawpirmlenoiseraroselera ccuotsatolihlhgaeunetnviritlaf,oseirnwciaa(alnbfttsteiahpoiboennlducigegi(fhpmfs1ee)itrnghesn0seni.hcf0lofei5owsrc)wa,eoenwmdstbetlurystKceiaogwdnnuiinignftfotafhitesrceraondewnoontetrisIngeisfenlorfagagnolonraeumdla.nppdaohNrnpiaioy--yn
lrlb7a)eue.tsmhet,Iirrnanilwcdtitcwtetadohhneatailonepdyapoieorvsrieheado.baurtoatIlvensetaucotttbhhhheeeeerraenisbdniosft(vrhanaeeooptroltbsahsittetheoarorplabwrlienptcooaaprilnneea.rplFcoiOurgi-fe.s c(alipoogn<widu(enin)sgct.ta(s.t)h5eiB)dg(r,hfaeawsnbsitciltghehnceiodFfu2li)ncic.taansundtdePaareslcntgdIoresaroKlyagalarcnnaodpgurhasnairpytceosacolcailomIsueosvnlnatsasrsnhidaoavtwateilehrosde-no
the 26 variant specimens, 15 are asymmetrical, significant geographical variation (p- 0.01),
370 HOESE
I). F.
wiili Flinders Island specimensaveragingsignif- than one species is included here, the high vari-
icantly higher counts than other populations, ability within populations suggests a single
with the exception of Lake Monibeong and highly variable species.
Kangaroo Island.
While there was some variability in the nier- Tasmanogobius lordi Scott, 1935
istic features lor various populations the most
distinctive population was that of Flinders Figures 8 and 9
Island. Specimens from Flinders Island aver- TasmanogobiuslordiScott, 1935: 56, tigs I, 2, pi. 4
aged higher branched caudal-ray and pectoral- lig. 2 (type locality: mouth of l.evcn River, Tas-
ray counts (Tables 3, .5). Similarly about halfof mania).
(hespecimens from FlindersIsland hadanal and Materialexamined. Tasmania. Rubicon River, AMS
second dorsal spines. In most other populations 1.28970-002, 7(26-31) and AMS 1.28970-002, 4(25-
the spines were present in about 80-90% ofthe 27), cleared and stained. Duck River, AMS 1.22561-
specimens. However, about halfthe specimens 001, 2(27-28). Inglis River, AMS 1.22564-001, 3(25-
from Kangaroo Island also had the spines. T29M). Rubicon River, AMS 1.27505-001 ">7e>5-29)-
D.2054-2056, 3(27-28). Forth River, AMS
Distribution. Tasmanogobius lasti is known 1.28792-001, 1(30). Greens Beach to Kelso, QVM
from estuarine and muddy marine areas from 1972/5/42IB, 1(28). Greens Beach, QVM
Kangaroo Island, South Australia, Victoria and 1972/5/488C. 2(27-28); QVM 1972/5/695B, 1(27).
throughout Tasmania.
Diagnosis. First dorsal fin usually VII. Vertebrae
Etymology. For Peter Last, CS1RO Division of usually 12+18. Pectoral rays usually 18-19. No
Fisheries, Hobart, who supplied much of the head pores. Body partly scaled; small patch of
Tasmanian material of this species. vertically elongate scales behind pectoral base
on sides ofbelly and isolated patch offew scales
Remarks. Although superficially similar to /'. on caudal peduncle, sometimes extending
lordi, the species differs in several features in forward in narrowwedgeto underend ofsecond
addition to those given in the key. lor example dorsal fin; rest ofbody naked. Gill rakers short,
/'. lastiisdeeperbodied and has fewer VTcheek outer rakerat angle offirst gill arch shorterthan
papilla lines. Although it is possible that more uppergill filaments. First dorsal fin short based.
"»•• ««
- ••••
H I It ~. i i t » > * « t • » -
- i • •
c - -- y ij H 1 ;
"n
i , i i'J^
mm
2
Figure 8. Head papilla pattern of Tasmanogobius lordi, based on several specimens.