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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.
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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.
Tank Mates
Small, peaceful schooling fish that occupy different water zones and pose no threat
Tiny, peaceful tetra that shares similar water parameters and does not compete for resources
Gentle, slow-moving fish that ignores bottom-dwelling plecos entirely
Similar algae-eating species; ensure sufficient algae and supplemental feeding to avoid competition
Small, peaceful fish with compatible water parameters and no territorial overlap
Peaceful bottom dweller; provide ample space and feeding spots to minimize competition
Common Diseases
Ich (White Spot Disease)
Small white spots resembling grains of salt on body and fins, flashing, lethargy
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
Red streaks, ulcers, fin erosion, bloating, lethargy
Improve water quality immediately, treat with broad-spectrum antibiotics such as kanamycin or nitrofurazone
Fungal Infection
White or gray cotton-like growths on body or fins, lethargy, loss of appetite
Treat with antifungal medication such as methylene blue or pimafix; improve water quality and remove any decaying organic matter
Nutritional Deficiency
Sunken belly, pale coloration, lethargy, wasting despite eating
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)