Clown Pleco tank mates
A small pleco at 9 cm that stays manageable. Needs driftwood to rasp and caves to hide. Does not control algae reliably.
Lists below are built from this species record (safest, best with, risky, unsafe) — each link opens a pair-level check, not a guarantee.
Best tank mates (on file)
Merged from conservative safest and best with fields — de-duplicated by species.
The Clown Pleco 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.
The Clown Pleco profile lists Ember Tetra as both safe and a recommended pairing. Ember Tetra schools in groups of 8 or more, so plan room for the whole group rather than one fish. Ember Tetra swims in the middle zone while Clown Pleco stays in the bottom, so the two will not crowd the same water column.
The Clown Pleco profile lists Harlequin Rasbora as both safe and a recommended pairing. Harlequin Rasbora schools in groups of 6 or more, so plan room for the whole group rather than one fish. Harlequin Rasbora swims in the middle zone while Clown Pleco stays in the bottom, so the two will not crowd the same water column.
The Clown Pleco profile lists Neon Tetra as both safe and a recommended pairing. Neon Tetra schools in groups of 6 or more, so plan room for the whole group rather than one fish. Neon Tetra swims in the middle zone while Clown Pleco stays in the bottom, so the two will not crowd the same water column.
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 Pleco
From the unsafe list — predation, aggression, or space rules on this profile.
Oscar reaches 35cm and is flagged predatory. Clown Pleco at 9cm is prey-sized for it. Oscar needs at least 300L, far above the 110L minimum for Clown Pleco. The tank that houses one stresses the other. Oscar is rated aggressive and Clown Pleco is rated peaceful. No community-style planning carries that gap.
Common Pleco needs at least 600L, far above the 110L minimum for Clown Pleco. The tank that houses one stresses the other.
Tank size and groups
- Published minimum for Clown Pleco: 110L — group minimum 1 .
- 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: 120L 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.
Filtration & heating
A 110L minimum tank for Clown Pleco needs a filter rated for at least 440L/hr turnover and a heater maintaining 24–30°C.
Similar fish (same category)
- Siamese Algae Eater — min 100L
- Bristlenose Pleco — min 80L
- Otocinclus — min 60L
- Royal pleco — min 500L
- Common Pleco — min 600L