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Fish Freshwater Care: hard Peaceful

Mad Barb

Leptobarbus hoevenii
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Other names: Hoven's carp, Sultan fish, Leptobarbus hoevenii
Group: Barbs and cyprinids · Family: Cyprinidae · Origin: Southeast Asia — Mekong and Chao Phraya basins, the Malay Peninsula, Sumatra and Borneo

Sold as juveniles as an elegant fish with a black lateral band and red fins; but it is a very fast, jumping schooling fish that grows beyond 50 cm. It is only for very large aquariums or indoor ponds.

Will it suit my tank?

Last updated October 16, 2026

Temperature
22–28°C
pH
6–7.5
Hardness
4–12 dGH
Adult size
50 cm
Minimum tank size
2000 liters
Social structure
School
Group
at least 3, ideally 5+
Swimming zone
Middle
Diet
Omnivore
Breeding
Egg scatterer

Water parameters

Temperature22–28°C
pH6–7.5
General hardness (GH)4–12 dGH
Recommended range
May escape, needs a lid Eats small fish Eats shrimp Damages plants

Overview

October 16, 2026 · Suggest an edit

The mad barb is a large, long-bodied cyprinid that lives in the big rivers of Southeast Asia and is also farmed as a food fish in the region. Juveniles have a black band along their silver-gold body and red-orange fins; this look makes it seem attractive for small tanks. However, adults exceed 50 cm, and grow even larger in the wild. Its name is said to come from local stories that, in the wild, it swims as if dazed after eating certain forest fruits that fall into the water.

Tank Setup

October 16, 2026 · Suggest an edit
  • At least 2000 liters and 300 cm in length for a small adult group; the realistic option is a large indoor pond.
  • 24–27°C; very powerful filtration, high oxygen levels, noticeable flow.
  • Simple decor and a completely open swimming area.
  • It jumps very powerfully; a heavy, tight-fitting lid is essential.

Diet

October 16, 2026 · Suggest an edit

Omnivorous. Large pellets and granules, vegetables and fruit, frozen mysis shrimp and bloodworms. It eats small fish and shrimp that fit in its mouth and consumes soft plants.

Behavior and Compatibility

October 16, 2026 · Suggest an edit

Peaceful but very fast and skittish. At sudden movement or light it can panic and crash into the tank walls and lid. It behaves more calmly in a group of its own kind.

Good companions: in a very large tank, peaceful fish of similar size: tinfoil barbs, Java barbs, bala sharks, large plecos.

Avoid: small and medium community fish, dwarf shrimp, slow and shy species.

A short profile for this species

The Mad Barb page has the basics, but the sections below have not been written yet. If you keep this species, write a section from your own experience; it will be published under your name after editor approval.

Tank mates

This list is calculated automatically from the species profile and grows as new species are added to the catalog. Try it in the planner for a definite answer.

Usually compatible

Should not be kept together

Hobbyist notes

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Change history and contributors
  1. Page created · October 16, 2026