Squalidus nitens
Squalidus nitens is a small freshwater/brackish cyprinid native to East Asian rivers and estuaries. Reaching just under 10 cm, it is popular among hobbyists for its bright markings rather than as a food fish.
Family
Gobionidae
Max Size
9.6 cm
Habitat
freshwater, brackish
Climate
subtropical
Best Season
Spring (April–June) and early autumn when water temperatures are 15‑22 °C.
Best Time
Early morning or late afternoon when insects are most active.
No distribution map available
Lake Biwa
JapanJapan's largest freshwater lake hosts healthy populations of Squalidus nitens, especially in its vegetated shallows.
Best: May-September
Nakdong River
South KoreaThe lower reaches of the Nakdong River provide clear, slow‑moving water ideal for Squalidus nitens during their spawning run.
Best: April-June
Yichang Section of the Yangtze River
ChinaIn the tributaries near Yichang, the river's moderate flow and abundant riffles support robust Squalidus nitens numbers.
Best: June-August
Tsukuba Reservoir
JapanA man‑made reservoir with abundant aquatic vegetation, making it a hotspot for Squalidus nitens in early summer.
Best: May-July
Ishikari River (Sapporo)
JapanCold, fast‑flowing sections of the Ishikari near Sapporo hold strong, wary Squalidus nitens that require skill to target.
Best: July-September
Jeju Island Streams
South KoreaClear mountain streams on Jeju Island are famed among local anglers for steady Squalidus nitens catches during spring runoff.
Best: March-May
Best bait: Microscopic live bait (mosquito larvae, daphnia) or tiny pieces of worm