Southern Blue eyes Pseudommugil signifier
A small, moderately compressed elongate fish with a very large eye; large sensory pores on dorsal surface of head and also large mandibular pores. Mouth protrusible and subveritical, with thick, rubbery lips. Posterior, premaxillary teeth enlarged and exposed when mouth is shut. First dorsal fin origin about midway along dorsal surface about level or just behind pectoral tips and dorsal fin origin just behind origin of anal fin. Scales along sides of body relatively large, dorsal ventrally elongated and in even rows.
Males differs from female in having the dorsal, anal and pelvic fins with extended filaments. This is particularly pronounced in the 1st dorsal, where the filaments lie well past origin of 2nd dorsal fin; pelvic fin rays of males are extended to lie past origin of anal fin. In females the first dorsal fin just reaches origin of 2nd and pelvic fins do not reach anal fin.
Colouration also varies between sexes. In males the fins are spectacular, particularly at breeding, but in females they are clear to yellowish, without markings.
The most notable features of these fishes are the brilliantly coloured fins of males though this is not constant.
Eyes are bright blue and opercle iridescent, with a midlateral indecsent sheen along body.
Greatest know lenths of males is 88mm and females usually smaller, only to about 62-63mm.
They are widespread throughout eastern drainages, from northern Queensland to as far south as Narooma in New South Wale (South eastern drainages) and also found in lakes and stream of the sand islands of south eastern Queensland. They may occasionally be found in rainforest streams on the escarpment.
Pacific blue eyes are abundant in fresh or brackish coastal waters but does not usually penetrate far inland and is not usually abundant in rainforest streams.
The females shed 1-2eggs at each spawning, and up to 9 eggs may be laid a day at peak of breeding season. Eggs (about 1.8mm in diameter) have adhesive filaments that attach to vegetations at the spawning site. Development takes about 18-21 days at 22-24oC; the larvae are well developed at hatching and take food immediately. Under aquarium conditions they grow rapidly and reach sexual maturity at about 6 months.
Pacific Blue eyes in ponds and Dams
This is another good frog friendly fish for little ponds and even for dams. Breeding season goes on for quite some time from mid spring to mid-autumn. Because they reach sexual maturity at just 6 months it makes them an excellent addition to ponds and Dams.
In Dams they can be an excellent addition to the biodiversity and as feeder or forage fish for larger predatorial fish like bass, silver perch and Murray cod.