Clown pleco care guide

Plan a tank with clown plecosSee all tank mates

Clown pleco quick facts

Tank setup

One clown pleco needs at least a 20-gallon (76 L) tank about 24 in (60 cm) long. Driftwood is essential because it eats the wood, so add several pieces plus caves and root tangles to hide in. Use strong filtration, as wood-chewing makes it messy.

How many clown plecos in a tank?

The smallest common tank that suits clown plecos is a 20 gallon. Here is roughly how many fit in each size when they are the only fish, based on adult size and waste output. Leave room if you want tank mates.

Numbers are bioload limits only. Males fight, so keep one male unless the tank is large and well planned.

Water parameters

Keep it at 24–28°C (75–82°F), pH 6.0–7.5 and soft to moderately hard water, ideally slightly acidic. It is hardy but does best in clean, well-oxygenated water with gentle current. Regular water changes and gravel vacuuming clear the fine wood waste it produces.

Best tank mates for clown plecos

These popular species share clown plecos' water needs and temperament. See the full list of 88 good matches.

• Betta fish

  6.5 cm (2.6 in) · 24–28°C (75–82°F)

• Cherry shrimp

  3 cm (1.2 in) · 20–27°C (68–81°F)

• Nerite snail

  2.5 cm (1 in) · 22–27°C (72–81°F)

• Guppy

  5 cm (2 in) · 22–27°C (72–81°F)

• Dwarf gourami

  7.5 cm (3 in) · 24–28°C (75–82°F)

• Bronze corydoras

  7 cm (2.8 in) · 21–26°C (70–79°F)

• Angelfish

  15 cm (5.9 in) · 24–29°C (75–84°F)

• Assassin snail

  2.5 cm (1 in) · 22–27°C (72–81°F)

Avoid keeping clown plecos with

• Common goldfish: They need different temperatures: Clown pleco 24–28°C (75–82°F), common goldfish 15–22°C (59–72°F).
• Fancy goldfish: They need different temperatures: Clown pleco 24–28°C (75–82°F), fancy goldfish 18–23°C (64–73°F).
• Oscar: Oscar can eat clown plecos: they're small enough to fit in its mouth once it's grown.
• Chinese algae eater: Chinese algae eater is aggressive and will bully or injure peaceful clown plecos.
• Convict cichlid: Convict cichlid is aggressive and will bully or injure peaceful clown plecos.
• Dojo loach: They need different temperatures: Clown pleco 24–28°C (75–82°F), dojo loach 18–23°C (64–73°F).

Feeding

A wood-eater that rasps driftwood for fiber, so wood should always be in the tank. Feed sinking algae wafers and vegetables like zucchini, cucumber, peas and sweet potato most days. Give small meaty treats like bloodworms once or twice a week. Feed after lights out.

Behavior

Peaceful and mostly active at night, spending the day tucked into wood. Males may squabble over favorite caves, so give each pleco its own hiding spot. Good tankmates include tetras, rasboras, corydoras, gouramis and peaceful dwarf cichlids. It ignores shrimp and snails.

Breeding

Bred in aquariums now and then, but not common. Males have broader heads and more and longer bristles (odontodes) on the rear body and pectoral fin spines. Eggs are laid in a snug cave or wood hollow, and the male guards them. Cooler water changes that mimic the rainy season can help trigger spawning.

Tips from experienced keepers

• Keep several pieces of driftwood in the tank. Wood is part of its diet, not just decor.
• Expect lots of fine brown waste from wood-chewing, and vacuum the substrate often.
• Offer zucchini or other vegetables at night so it eats before faster fish.
• Give each clown pleco its own cave or wood hollow to prevent squabbles.
• It may rasp soft-leaved plants. Tough plants like anubias and java fern hold up better.

Sources

We checked these references when writing this page. Values are for healthy long-term keeping, not survival limits. Last reviewed 2026-10-13. See our editorial policy.

• scotcat.com
• fishbase.se
• fishkeepingworld.com
• en.wikipedia.org