Aguaboa bristlenose pleco
Ancistrus aguaboensis
Also known as L032
Care at a glance
- Temperature
- 77–84°F (25–29°C)
- pH
- 6.0–7.5
- Adult size
- 3.1 in (8 cm)
- Minimum tank
- 29 gal (110 L)
- Temperament
- Peaceful
- Social behavior
- Solitary
- Swim level
- Bottom
- Difficulty
- Medium
- Breeding
- Medium
- Rarity
- Rare
- Origin
- Rio Água Boa, Tocantins basin, Brazil
- Family
- Loricariidae
Overview
This is a small bristlenose that keeps to itself, so a single fish or a male and female pair suits a tank better than a crowd; two males will squabble over caves. It spends the day clamped to wood or tucked in a cave and comes out at night to rasp algae and biofilm from surfaces. Temperament is peaceful, so it mixes well with calm community fish that will not bully it off its food. Offer algae wafers and vegetables such as zucchini or cucumber, along with the odd sinking meaty item, and keep a piece of driftwood in the tank for it to graze and gnaw. A tank of around 110 liters gives it room and a territory of its own.
In the wild
The Aguaboa bristlenose comes from the Rio Agua Boa, a clear tributary in the Tocantins basin of Brazil, where it lives among rock and sunken wood in relatively fast, well-oxygenated water. Recreate that with a mature tank, plenty of driftwood and rocky caves, and a moderate current. Keep the water soft to neutral, roughly pH 6.0 to 7.5, and warm at about 25 to 29 C. Good filtration and steady oxygen matter more to it than any decoration.
Good to know
Ancistrus aguaboensis belongs to Loricariidae, the suckermouth armored catfishes, and is a dwarf member of the bristlenose group at about 8 centimeters. Its dark body is dusted with small pale spots, and males grow the branching fleshy tentacles across the snout that give bristlenoses their name. Like others in the genus it is a cave spawner of moderate difficulty: the male takes a narrow cave, the female lays a clutch inside, and he guards and fans the eggs until they hatch.
Did you know
Only males grow the branching snout tentacles, and one well-known idea is that these fleshy growths mimic a clutch of wriggling larvae, so a female may read them as a sign the male is already a proven father.
Tank mates
Aguaboa bristlenose pleco is a peaceful, solitary species that keeps to the bottom. These picks match on water type, temperature, pH, size and temperament.

Gary Lange's rainbowfish
Melanotaenia garylangeiFreshwater3.5 in (9 cm)29 gal (110 L)75–84°F (24–29°C)
Kamaka rainbowfish
Melanotaenia kamakaFreshwater2.8 in (7 cm)29 gal (110 L)77–86°F (25–30°C)
Eigenmann's whiptail
Rineloricaria eigenmanniFreshwater4.7 in (12 cm)29 gal (110 L)75–82°F (24–28°C)Dwarf spiny pleco
Micracanthicus vandragtiFreshwater2 in (5 cm)29 gal (110 L)79–86°F (26–30°C)
Orinoco peckoltia
Peckoltia lujaniFreshwater3.5 in (9 cm)29 gal (110 L)77–84°F (25–29°C)Thayer's dwarf acara
Laetacara thayeriFreshwater4.7 in (12 cm)29 gal (110 L)75–82°F (24–28°C)
Common questions
What size tank does an Aguaboa bristlenose pleco need?
An Aguaboa bristlenose pleco needs at least 29 gal (110 L). It spends most of its time in the bottom.
What temperature and pH do Aguaboa bristlenose pleco need?
Aguaboa bristlenose pleco are comfortable at 77–84°F (25–29°C) with a pH of 6.0–7.5.
How big do Aguaboa bristlenose pleco get?
An adult Aguaboa bristlenose pleco reaches about 3.1 in (8 cm).
Where to buy
Some links may not be the exact species or variety.
- Imperial Tropicals Freshwater fish and inverts bred at a Florida hatchery
- The Wet Spot Tropical Fish Large selection of quarantined tropical freshwater fish, with live arrival guarantee and Next Day Air flat rate shipping to all US locations
…or ask your local fish store.
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Related species

Gold marble bristlenose pleco
Ancistrus claroFreshwater3.1 in (8 cm)20 gal (75 L)77–84°F (25–29°C)
Blue medusa pleco
Ancistrus macrophthalmusFreshwater3.5 in (9 cm)29 gal (110 L)77–84°F (25–29°C)
Colombian bristlenose pleco
Ancistrus triradiatusFreshwater4.3 in (11 cm)29 gal (110 L)77–84°F (25–29°C)
Bristlenose pleco
Ancistrus sp.Freshwater4.9 in (12.5 cm)20 gal (75 L)70–79°F (21–26°C)
Starlight Bristlenose Pleco (L183)
Ancistrus dolichopterusFreshwater5.5 in (14 cm)30 gal (115 L)79–84°F (26–29°C)
Medusa Pleco (L034)
Ancistrus ranunculusFreshwater5.9 in (15 cm)40 gal (150 L)79–86°F (26–30°C)