Family: Cyprinidae
A peaceful carnivore cyprinidae from the rivers of southern China, Taiwan and northern Vietnam — moderate care.
Opsariichthys pachycephalus is a Cyprinidae. In the aquarium it stays semi-aggressive. Plan on 11.2–16 cm of adult fish at 18–26 °C. Related profiles: Opsariichthys bidens, Opsariichthys evolans, Opsariichthys hainanensis.
Difficulty: moderate. Semi-aggressive. Solitary, pairs or small groups.
Aim for 18–26 °C. Standard heater to hold the mid-range steadily; community-standard range; verify locally.
Adults reach 11.2–16 cm; it is upper; surface-oriented. Plan for at least 160 litres.
Carnivore; quality prepared foods with variety; regular frozen or live foods. It forages naturally over smooth gravel and sand with open floor space, so let some food reach the bottom.
Yes, with care. Semi-aggressive — pair it with Amur False Gudgeon — Similar size and water needs, China-Bitterling — Similar size and water needs, Acanthorhodeus chankaensis — Similar size and water needs and skip Small fish and shrimp — Live-prey size.
Its home waters are 中国南方各水系、台湾、越南北部 — clear streams, rivers and still waters, with strong current with heavy aeration.
A confirmed jumper: fit a tight lid and lower the waterline slightly.
Spawning; condition with rich foods and simulate seasonal changes. Males are typically slimmer and more intensely colored; females fuller-bodied.