Also called yellowtail trumpeter. A medium sized, perch-like fish which grows to about 200 mm, but some individuals may reach a maximum length of 300 mm. Silver-gold coloured, with golden brown spots and paler colouring below (often yellow). A key distinguishing feature from other similar fish (as it is easily mistaken for the widely distributed spangled perch, Leiopotherapon unicolor) is … Read More
An introduced fish and a pest species in Australia. They are sexually dimorphic, meaning males and females are physically different in appearance. Males have a distinctive long, sword-like, extension of the lower caudal fin that females do not possess, while adult females tend to be bigger bodied than males. The average size of adults is around 80 mm total length … Read More
A small, native fish which grows to a maximum total length of 120 mm (nose to tip of tail). Brown to beige body colour, often with dark scale margins that forms a network pattern on the sides of the fish. Breeding males have red to orange dorsal and anal fins, that have a black band on the sub margin, and … Read More
A large, deep-bodied galaxiid with a distinctive trout-like appearance and unmistakable pattern of dark spots (bars in juveniles) on the sides. A short diagonal stripe exists below the eye. Colour is olive to tan brown overall; fins are reddish-orange, usually with dark edges. The largest galaxiid in the state reaching a maximum size of 200 mm, but more commonly 120-140 … Read More
The largest native freshwater fish in the south-west, with larger individual up to 50 cm though more commonly around 30-40 cm. A few individuals have been collected from large water supply dams that were in excess of 80 cm, however this is extremely unusual. Being the only native cobbler (or catfish) species in the freshwater systems of the region (other … Read More
The species, which is native to rivers in Western Australia north of the Murchison River, attains a length of up to 25 cm, though typically less than 15 cm in the Canning River where it was recently introduced to. It has a slender body covered with light grey-brown speckles, and a small-moderate sized eye. It has a spiny dorsal fin … Read More
Redfin, or European, Perch are a medium-sized freshwater fish native to northern Europe. They will grow in excess of 60 cm and 10 kg, however in southwest waters are more typically seen at less than 40 cm and 1-2 kg. Due to extremely successful breeding, they are known to overpopulate areas. They are a deep-bodied fish, with a slightly forked … Read More
The eastern gambusia is the most widespread exotic freshwater fish in Australia and one of the most widely introduced freshwater fish in the world. Female gambusia are generally found up to 60 mm and males 35 mm. Mature females have a characteristic large black blotch just above the vent (see image).