Bristlenose Pleco

Ancistrus sp.

The best algae-eating pleco for most aquariums. Unlike Common Plecos that grow to 2 feet, Bristlenose stay small (5"). Males develop distinctive tentacle-like bristles on their snout. Hardy, peaceful, and effective.

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Quick Facts

Max Size5"

Lifespan5–10 years

Min Tank20 gal

DietHerbivore/Omnivore

SchoolingNo

OriginSouth America

Water Parameters

Temperature22–28°C

pH Range6–7.5

Natural Habitat

Fast-flowing, oxygen-rich rivers and streams with rocky substrates and abundant driftwood.

Region

Amazon & Orinoco basins

Countries

Brazil, Venezuela, Trinidad

Feeding

Algae wafers, blanched zucchini, cucumber, driftwood (they rasp it for fibre). Supplement with sinking pellets.

Compatible Tank Mates

Good Matches

Almost anything peacefulCommunity tanksCichlid tanks (most)Planted tanks

Avoid

Other territorial bottom-dwellers in small tanksPleco-aggressive species

Breeding

Cave spawner. Male guards eggs in a cave or hollow. Relatively easy — provide caves and they'll often breed spontaneously.

Care Tips

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Driftwood is essential — they eat the biofilm and fibre

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Males have bristles, females do not

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Won't damage live plants

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Albino, Super Red, and Longfin varieties available

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Much better choice than Common Pleco for most tanks

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