Red Fin Thresher Pleco - L011 - Squaliforma emarginata
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Red Fin Thresher Pleco (L011 - Squaliforma emarginata) is a beautifully streamlined and lesser-known pleco species, admired for its rich red to orange finnage and sleek, elongated body. Its unique appearance and manageable size make it a prized addition for pleco collectors and aquarists with well-maintained, mid-to-large aquariums.
Common Name: Red Fin Thresher Pleco
Scientific Name: Squaliforma emarginata
Family: Loricariidae
Size: 6–7 inches
Temperament: Peaceful
Difficulty: Moderate
Native Region: South America (Rio Tocantins, Brazil)
Tank Size: Minimum 50 gallons
Temperature: 76–82°F
pH: 6.5–7.5
Hardness: Soft to moderate
Decor: Driftwood, smooth rocks, shaded caves, and moderate to strong water flow
• Tankmates: Peaceful community fish and non-aggressive bottom dwellers
• Diet: Omnivorous – feeds well on algae wafers, sinking pellets, and occasional protein-based foods
• Behavior: Generally shy and prefers cover; more active in low-light settings
• Filtration: Requires clean, well-oxygenated water with consistent parameters for long-term health