Predaceous Chub (Parazacco spilurus)

Family: Cyprinidae

A peaceful omnivore cyprinidae from South China and northern Vietnam — moderate care.

Care parameters

Water temperature: 18–26 °C
pH: 6.5–7.5
GH hardness: 5–15 dGH
Adult length: 9.4–13.4 cm
Minimum tank: 134 L
Water layer: Upper; surface-oriented; keep 6+
Difficulty: Moderate
Temperament: Peaceful
Origin: 中国华南、越南北部

Species overview

Parazacco spilurus is a Cyprinidae. In the aquarium it stays peaceful. Plan on 9.4–13.4 cm of adult fish at 18–26 °C. In a community tank it pairs well with Amur False Gudgeon, China-Bitterling.

Native biotope

Habitat: Clear streams, rivers and still waters
Flow: Strong current with heavy aeration
Dissolved O₂: Demands high dissolved oxygen

Aquascape & hardware

Substrate: Dark fine gravel or sand
Hardscape: Driftwood, water-worn stones and shelters that mimic the native biotope
Plants: Dense floating plants for cover and security

Temperament, diet & tankmates

Schooling: Keep 6+; larger groups settle better
Diet: Omnivore; quality prepared foods with variety
Recommended tankmates: Amur False Gudgeon — Similar size and water needs
China-Bitterling — Similar size and water needs
Acanthorhodeus chankaensis — Similar size and water needs
Avoid keeping with: Large aggressive cichlids — Bullying and injury risk
Known fin nippers — Constant stress and fin damage

Breeding & notes

Sexual dimorphism: Males are typically slimmer and more intensely colored; females fuller-bodied
Breeding method: Spawning; condition with rich foods and simulate seasonal changes

Frequently asked questions

How is it different from the pale chub?

Similar build and behavior, but smaller, from more southerly ranges, and with slightly different patterning. Care requirements are nearly identical.

Is it good for beginners?

It is hardy enough, but its need for cool, fast, oxygen-rich water makes it a better second or third species than a first fish.

Will it jump?

Yes — persistently and powerfully. A weighted, gap-free lid is not optional with any stream chub.

How do I sex them?

Mature males are slimmer with richer color and faint tubercles in breeding condition; females are deeper-bodied with a rounder belly profile.