AquaStocker

Bristlenose Pleco Care Guide

Ancistrus cirrhosus · Easy care · 25 gallon minimum

Updated June 2026
By the AquaStocker team · How we source our data
Bristlenose Pleco (Ancistrus cirrhosus)
Photo via Wikimedia Commons 📌 Save

A compact, algae-grazing pleco that actually fits home tanks (unlike the common pleco). Needs driftwood.

Adult size5.0"
Min tank25 gal
Temp73–81°F
pH6.5–7.5
TemperamentPeaceful
SocialSolitary / pairs
Care levelEasy
DietHerbivore

Check your stocking with the stocking calculator →

How big does a bristlenose pleco get?

A bristlenose pleco (Ancistrus cirrhosus) reaches about 5.0 inches as an adult. Plan tank size and tank mates around the adult size, not the small fish you buy at the store.

Tank size & setup

Give a bristlenose pleco a minimum of 25 gallons, with water at 73–81°F and a pH of 6.5–7.5. As a easy-care, herbivore species, a stable, cycled tank with the right diet keeps them healthiest.

Good tank mates

Pair a bristlenose pleco with peaceful species that share its temperature and pH range. Compatible options include:

About the bristlenose pleco

Ancistrus cirrhosus is a species of freshwater ray-finned fish belonging to the family Loricariidae, the suckermouth armoured catfishes, and the subfamily Hypostominae, the suckermouth catfishes. This catfish is found in South America.

Recommended gear for bristlenose plecos

As an Amazon Associate we earn from qualifying purchases.

FAQ

What size tank does a bristlenose pleco need?
At least 25 gallons. Bigger is always more forgiving for water quality.
Is the bristlenose pleco good for beginners?
Yes — it's a easy-care species that tolerates typical community conditions.

Related

Neon Tetra Care GuideBetta Care GuideGuppy Care GuideMolly Care GuidePlaty Care GuideZebra Danio Care Guide