Percichthyidae

Balston's pygmy perch

Nannatherina balstoni

Nine Centimeters Percichthyid Fish from Australian Waters

• Temperate
• Coastal
• Transcontinental
• Freshwater fish
• Oceania
• Small
• Temperate fish

Balston's pygmy perch (Nannatherina balstoni), also known as Balston's perchlet, or king river perchlet, is a species of temperate perch endemic to Southwest Australia, where it occurs in coastal streams, ponds, lakes, and swamps. It prefers shallow, acidic waters with patches of sedge growth. This species can reach 9 cm (3.5 in) SL, though most do not exceed 6 cm (2.4 in).