Red Tail Prochilodus

Red Tail Prochilodus (Prochilodus sp.) is a powerful and eye-catching South American schooling fish known for its sleek silver body and distinctive red tail and fins. Highly active and constantly on the move, this species is prized for its natural algae-grazing behaviour and impressive size. Best suited to large aquariums, the Red Tail Prochilodus is an excellent choice for experienced aquarists seeking an energetic and functional display fish.

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Features of Red Tail Prochilodus

• Native habitat: rivers, floodplains, and fast-flowing waterways of South America
• Maximum size: approximately 40–45 cm in length
• Lifespan: 10–15 years with proper aquarium care
• Temperament: peaceful but very active; best kept in groups
• Colouration: metallic silver body with vivid red tail and fin highlights
• Behaviour: fast-swimming mid- to lower-level fish; constant grazer and open-water cruiser

The Best Aquarium Size for Red Tail Prochilodus

A minimum aquarium size of 800 litres is recommended, with larger systems strongly preferred. This species requires significant swimming space and excellent water quality due to its size and activity level. Long, wide aquariums with open layouts allow for natural schooling and cruising behaviour.

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Tank Mate Compatibility for Red Tail Prochilodus

Red Tail Prochilodus is peaceful and coexists well with large, non-aggressive fish. Suitable tank mates include:
• Large South American cichlids
• Silver dollars and other large characins
• Large catfish species
• Other Prochilodus (in very large aquariums)

Avoid small fish that may be stressed by constant movement or outcompeted for food.

Diet for Red Tail Prochilodus

An omnivorous grazer, Red Tail Prochilodus feeds primarily on algae, biofilm, and plant matter in nature. In the aquarium, offer a varied diet of high-quality vegetable-based pellets, algae wafers, spirulina flakes, and blanched vegetables such as zucchini or spinach. Supplement with occasional protein-rich foods for balanced nutrition. Feed small amounts 2–3 times daily.

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Aquarium Setup for Red Tail Prochilodus

Aquarium Filtration
Heavy-duty filtration is essential due to the fish’s size and waste production. Large canister filters or sump systems are strongly recommended to maintain excellent water quality.

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Aquarium Plants
Live plants are generally not recommended, as they are likely to be eaten or uprooted. If plants are used, choose hardy species attached to rocks or décor.

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Aquarium Lighting
Moderate lighting is sufficient and helps encourage natural algae growth for grazing. Adjustable LED lighting works well in large aquariums.  We recommend Zetlight LED aquarium lighting that allows for easy adjustability in a full range of spectrums.  

Aquarium Heating
Maintain stable temperatures between 24–28°C using reliable heaters and thermometers.

Aquarium Substrate
Fine sand or smooth gravel is ideal, allowing natural grazing behaviour and reducing wear on the mouth.

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Aquarium Decorations
Keep décor minimal, focusing on open swimming areas with driftwood or rocks placed along the edges. This setup supports natural movement patterns and reduces stress.