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FisheasyFreshwater

Pitbull Pleco

Parotocinclus jumbo

📍 South America

The Pitbull Pleco (Parotocinclus jumbo) is a small, hardy algae-eating catfish native to Brazil, prized for its efficient algae control and peaceful nature. It closely resembles the Otocinclus but is slightly more robust and tolerates a wider range of water conditions. Its compact size and active grazing behavior make it a popular choice for planted aquariums and community tanks.

Size2.2"
Min Tank20g
School4+
peaceful
Zonebottom

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Care Guide

Diet

Pitbull Plecos are primarily herbivores that graze constantly on algae and biofilm covering glass, rocks, and plant leaves. Supplement their diet with algae wafers, blanched zucchini, cucumber, and spinach offered 2-3 times per week. Occasional protein-rich foods such as small sinking pellets or frozen daphnia can be offered once a week to round out their nutrition.

Behavior

Pitbull Plecos are active, peaceful grazers that spend most of their time clinging to surfaces and methodically consuming algae. They are social fish that do best in groups of four or more, becoming more active and less stressed when kept with conspecifics. They are non-aggressive toward tankmates and rarely compete for territory, though they may occasionally jostle with other bottom-dwelling plecos over prime grazing spots.

Breeding

Breeding Pitbull Plecos in captivity is possible but uncommon, typically triggered by water changes mimicking seasonal rainfall and a slight drop in temperature. They are egg scatterers that deposit adhesive eggs on flat surfaces such as broad plant leaves or smooth rocks. The male guards the eggs until they hatch in approximately 3-5 days, and fry can be fed infusoria and fine algae powder.

Common Diseases

Ich (White Spot Disease)

Symptoms

Small white spots resembling grains of salt on body and fins, flashing, lethargy

Treatment

Raise temperature gradually to 28-29 C, treat with ich medication such as malachite green or copper-based treatments at half dose due to scaleless nature

Bacterial Infection

Symptoms

Red streaks, ulcers, fin erosion, bloating, lethargy

Treatment

Improve water quality immediately, treat with broad-spectrum antibiotics such as kanamycin or nitrofurazone

Fungal Infection

Symptoms

White or gray cotton-like growths on body or fins, lethargy, loss of appetite

Treatment

Treat with antifungal medication such as methylene blue or pimafix; improve water quality and remove any decaying organic matter

Nutritional Deficiency

Symptoms

Sunken belly, pale coloration, lethargy, wasting despite eating

Treatment

Increase dietary variety with algae wafers, blanched vegetables, and biofilm-rich surfaces; ensure adequate algae growth in the tank

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Quick Facts

diet
Herbivore/omnivore – algae, biofilm, blanched vegetables, algae wafers, occasional protein
lifespan
3-5 years
max size
5.5 cm (2.2 in)
tank size
20 gallons minimum
temperament
peaceful

Water it likes

ph
6.5-7.5
ammonia
0 ppm
nitrate
<20 ppm
hardness
4-12 dGH
temperature
72–79°F (22–26°C)

Stats

Community tips0
Kept by0 hobbyists