Tasmanian mudfish

Tasmanian mudfish
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Osmeriformes
Family:	Galaxiidae
Genus:	Neochanna
Species:	N. cleaveri
Binomial name
Neochanna cleaveri (E. O. G. Scott, 1934)

The Tasmanian mudfish, Neochanna cleaveri, is a small Australian amphidromous fish in the galaxiid family, of the order Osmeriformes.

N. cleaveri is found in coastal wetlands of south eastern Australia: around Tasmania, Flinders Island in Bass Strait and southern Victoria particularly Wilsons Promontory. Isolated populations occur in the Otways, near Geelong and Melbourne in Victoria, as well as in far eastern South Australia near Naracoorte. The fish's range has been significantly reduced, especially in Victoria, due to destruction of suitable habitat through human activity such as swamp reclamation and drainage.

Typically galaxiid in form, scaleless, with an elongated, tubular body, and moderately sized mouth, it may be distinguished from other galaxiid species by the small eye and the blunt, rounded head shape with protruding tubular nostrils over the upper lip. Pectoral fins are rounded. The pelvic fins are small and set at about the midpoint of the fish's length, and the dorsal and anal fins are set right back with the dorsal fin slightly ahead of the anal. Caudal fins are rounded with well-developed flanges along the caudal peduncle reaching nearly to the posterior edges of the dorsal and anal fins. Greenish brown in colour, sometimes golden, they are greyish on their ventral surfaces, and marked with irregular darker mottled bands and blotches over the back, sides, and fin bases. Its length is up to 140 mm; commonly it grows to 80 mm.

This species is found mostly in muddy swamps, marshes and drains with heavy vegetation. The fragmented populations in Victoria are likely to be remnants of a larger continuous population before European settlement.

Although individuals would be taken as part of the Tasmanian whitebait fishery, the numbers of this species involved is likely to be quite small. It adapts well to captivity and is easy to keep, but is secretive and nocturnal, limiting its appeal.

...
Wikipedia