Key to the common species of the Brisbane area- DRAFT

Yes Blue catfish Yes Forked Tail Yes Long Finned Eel Eel-tailed Catfish No extends well in front of anal fin. Yes Small and indistinct Snub-nosed Garfish No Short Finned Eel Yes Scales Bottom jaw Queensland Lungfish extended well Long-based Large and obvious past top jaw Goldfish* Yes 1 with a single peak No Dorsal Yes Australian Smelt fin Dorsal fin positioned far back on body No Bony Bream Short-based: very Mouth Continuous Forked Yes Crimson-spotted Semi-transparent with extended last ray barbels Dorsal tail slight dusky look Caudal Number of Agassiz’s Glassfish fin rayed dorsal fins Yes Body and fins Yes 2nd dorsal Estaury Perchlet Pacific Blue-eye and anal fins Very transparent, scales longbased Body very highly and body very see- laterally compressed through Bright and semi-transparent blue eye 2 or 1 with 2 Yes distinct peaks No No Fly-specked Hardyhead Line continuous No Uniform Rounded, short through eye, line No silvery (eye diameter > snout) No more dark than body: no Sea Mullet silvery lateral line Snout Marjorie’s Hardyhead No Yes No Freshwater mullet Pointed, long (eye diameter = snout length)

Continued over the page NO From 1 with 2 distinct Yes peaks previous Bullrout Spangled perch page Head heavily 2 or 1 with 2 armored with Deep, robust Number of distinct peaks numerous stout rayed Terminal spines dorsal fins Speckled Goby

No Body Mouth almighty shape 2 Mouth position Forked Yes tail Yes Blue-spot Goby Crimson-tipped gudgeon Slightly underslung Elongate Pelvic fins fused to form (under head) Bony knob at a cup shaped disc Yes tip of snout Black spot Number of Flathead gudgeon rayed dorsal fins Base of tail Large mouth reaching Yes No back to below or Purple-spotted Gudgeon behind the eye No No Numerous Dwarf Flathead white and brick Black vertical line Gudgeon red spots on Yes sides and Empire Gudgeon No caudal fin 1 thick mid-lateral stripe Horizontal Cox’s Gidgeon dark stripe Horizontal along length of body on dorsal and Number of No anal fins horizontal stripes Yes on side Swordtail (male)* Stripes Striped Gudgeon Yes No on side 5-7 thin stripes Large sword Swordtail (Female) * extension from Black line on 1 with a lower margin of Yes lower margin of single peak caudal fin caudal peduncle Platy* Firetailed Gudgeon Caudal No peduncle Vertical narrow broad; head curved lines No triangular Yes Mosquitofish*

Dark specks No on caudal fin

Guppy* No

External anatomy of typical freshwater (Source: Allen G.R. et al, 2002)

* - denotes an exotic species