What fish can live with Clown Loach?

Pairs with peaceful community fish in adult volume: gouramis, corydoras, angelfish, and even tiger barbs that they shoal alongside in the wild. Need a group of five or more and a 400L or larger adult tank, since they reach 25 to 30 cm. Tank mates only matter once the long-term volume is genuinely in place.

What tank mates should you avoid with Clown Loach?

Avoid Oscar, Jack Dempsey based on size, temperament, or predation risk on file.

What size tank do Clown Loach need for a community?

400L is the planning floor for adult swimming space and bioload headroom. Long-term, a 488L+ tank lets adults use the full footprint without crowding the next species. Footprint, meaning length and front-to-back depth, matters as much as raw volume for active or territorial species.

Clown Loach tank mates

A schooling loach that grows to 30 cm. The 5 cm juveniles sold in shops become adult fish that need 400 L or more over several years.

Evidence: partially verified

Confidence: high

Lists below are built from this species record (safest, best with, risky, unsafe) — each link opens a pair-level check, not a guarantee.

← Full Clown Loach profile·Compatibility checker·Tank builder·More loach

Best tank mates (on file)

Merged from conservative safest and best with fields — de-duplicated by species.

Angelfish Pair check
The Clown Loach profile lists Angelfish as both safe and a recommended pairing. Angelfish is a semi-aggressive intermediate-care species with a 150L minimum. Run the pair checker for your specific tank before stocking.
Corydoras Catfish Pair check
The Clown Loach profile lists Corydoras Catfish as both safe and a recommended pairing. Corydoras Catfish schools in groups of 6 or more, so plan room for the whole group rather than one fish.
Pearl Gourami Pair check
The Clown Loach profile lists Pearl Gourami as both safe and a recommended pairing. Pearl Gourami is a peaceful beginner-care species with a 100L minimum. Run the pair checker for your specific tank before stocking.
Tiger Barb Pair check
The Clown Loach profile lists Tiger Barb as both safe and a recommended pairing. Tiger Barb schools in groups of 8 or more, so plan room for the whole group rather than one fish.

Risky or situational

From risky tank mates and broad avoid with (excluding “unsafe” below). May work with species-only setups, more water, or mature systems — read the pair page.

None on file beyond the safe list.

Fish to avoid with Clown Loach

From the unsafe list — predation, aggression, or space rules on this profile.

Oscar See why (pair)
Oscar is rated aggressive and Clown Loach is rated peaceful. No community-style planning carries that gap.
Jack Dempsey See why (pair)
Jack Dempsey is rated aggressive and Clown Loach is rated peaceful. No community-style planning carries that gap.

Tank size and groups

Published minimum for Clown Loach: 400L — group minimum 6 (schooling).
Compatibility changes when the tank is too short for turning, too little for a real school, or too warm for one species and not the other — that is why pair checks include tank context, not only temperament.
Nearest litre hub to this minimum: 300L hub.

Easier alternatives to consider

Conservative beginner-peaceful picks from the library — not replacements for reading, but a shorter on-ramp than this species for a first tank.

Plan before you buy

Pair checks for every mix, then multi-species stocking in the builder.

Open compatibility checker Tank builder

Filtration & heating

A 400L minimum tank for Clown Loach needs a filter rated for at least 1600L/hr turnover and a heater maintaining 24–30°C.

Filter buying guide →Heater buying guide →Beginner plants guide →

Similar fish (same category)

Yoyo Loach — min 200L
Dojo / weather loach — min 150L
Zebra Loach — min 120L
Hillstream Loach — min 100L
Kuhli Loach — min 70L

Related (care + temperament)

Other species that list Clown Loach

Reverse lookup: these profiles reference Clown Loach under safe or “best with” lists.

Yoyo Loach tank mates