L035 Hypostomus Sp. Emarginatus

Here’s a solid, clear care guide for L035 Hypostomus sp. 'emarginatus', a medium-large pleco known for its armored body, bold patterning, and durability in a well-maintained tank.

L035 Pleco (Hypostomus sp. 'Emarginatus') Care Guide

Common Names:

• L035 Pleco

• Hypostomus Emarginatus

• Spotted Armored Pleco (less common)

Scientific Name: Hypostomus sp. 'emarginatus' (unofficial/trade name)
Origin: South America – Amazon and Orinoco basins
Size: 10–12 inches (25–30 cm)
Lifespan: 10–15 years
Temperament: Semi-peaceful, territorial toward other bottom dwellers

Tank Setup

• Tank Size: 75 gallons minimum for an adult

• Substrate: Sand or smooth gravel

• Decor:

  • Heavy driftwood, caves, rockwork (must be secure—this pleco is strong)

  • Open space for movement + shaded zones

• Plants: Might uproot delicate plants; use hardy or potted ones

• Lighting: Low to moderate

Water Parameters

• Temperature: 75–82°F (24–28°C)

• pH: 6.5–7.5

• Hardness: Moderate (5–15 dGH)

• Filtration: Strong—produces a heavy bioload

• Water Changes: 40–50% weekly—critical for health and growth

Diet

• Feeding Style: Omnivorous with a herbivorous lean

• Staple Foods:

  • Algae wafers, sinking omnivore pellets

  • Blanched vegetables (zucchini, spinach, cucumber, sweet potato)

  • Occasional protein (shrimp pellets, bloodworms)

• Feeding Frequency: Once or twice daily

• Note: Grazes algae but should not be treated as a “cleanup fish”—feed it directly

Behavior & Tankmates

• Activity: Mostly nocturnal; may become more visible in dim tanks

• Temperament: Peaceful with upper-level fish, but may be territorial with other plecos or catfish

• Good Tankmates:

  • Medium to large peaceful fish (tetras, rainbowfish, Severums, Geophagus)

  • Avoid: Other plecos unless tank is very large and has multiple caves

• Compatibility Tip: One pleco per tank unless enough space and hiding spots

Breeding

• In Captivity: Rare; undocumented for this exact variant

• Spawning Type: Presumed cave spawner like other Hypostomus

• Fry Care: Would require soft water, strong oxygenation, and stable conditions

Care Tips

• Strong filtration is a must—this species is a heavy eater and waste-producer

• Provide multiple solid hiding spaces

• Needs clean, stable water—poor quality leads to barbel erosion and infections

• Keep wood or structure in the tank even if not required for diet