Red Whiptail Catfish
Rineloricaria sp. 'Red'
Loricariidae
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About
The Red Whiptail is not a described wild species but a captive-bred red colour line: PlanetCatfish calls the red colour artificial and cannot say which species or methods produced it. Seriously Fish sets out three unproven theories — a genuine wild red fish, possibly of Paraguayan origin; a selectively bred Rineloricaria lanceolata; or a hybrid with R. lanceolata — and rates the selective-breeding theory the least likely of the three, because no red mutants have ever been recorded in spawning reports for that frequently-bred species. Every specimen in the trade is tank-bred, and keepers occasionally report brown wild-coloured fry appearing from red parents. Physically it is a slender, twig-shaped armoured catfish of about 12 cm with a flattened head, rust-red to orange body, darker banding and a fine filament trailing from the tail. It rests flat on wood, leaf litter and glass by day, moves in short glides, and is one of the most peaceful catfish in the hobby.
Care
Give it a sand bottom it can burrow into, plenty of driftwood, leaf litter and half-pipe or cave refuges, and cool, clean, well-oxygenated water. Sources disagree on temperature: Seriously Fish quotes 24-29 C, AquaInfo 22-28 C, and FishBase gives 25-28 C for the putative parent R. lanceolata — so 24-26 C is the safe middle, and sustained warmth above 28 C is the single most common way to lose this fish. pH 6.0-7.5 and soft to moderately hard water suit it. Keep three or more in a tank at least 80 cm long with gentle to moderate flow and subdued lighting, and avoid boisterous tankmates that will out-compete it at feeding time.
Diet
Grazes biofilm and aufwuchs but accepts most sinking foods. Feed algae and catfish tablets after lights-out, add blanched vegetables two or three times a week, and use frozen bloodworm or daphnia as a supplement rather than a staple.
Tankmate compatibility
Gets along with (82)
Possible with care (104)
Avoid (85)
Computed by the AquaSage engine for a spacious reference tank — always check the full verdict for your exact setup in the calculator.
Telling males from females
What works for this species, most reliable first.
- Bristles and cheek spinesStrong · from about a year
Male plecos grow odontodes — spiny growths on the cheeks and along the leading pectoral rays. Bristlenose males additionally grow branching tentacles across the snout and over the top of the head.
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Frequently asked questions
- What tank size does a Red Whiptail Catfish need?
- A Red Whiptail Catfish needs an aquarium of at least 80 litres (21.1 US gallons) with a footprint at least 80 cm (31.5 in) long — for this species, swimming length matters as much as raw volume.
- What water parameters does a Red Whiptail Catfish need?
- Red Whiptail Catfish does best at 22–28 °C (71.6–82.4 °F), pH 6–7.5 and a general hardness of 2–15 °dGH.
- What group size does a Red Whiptail Catfish need?
- Red Whiptail Catfish is a social species — keep a group of at least 3 so natural behaviour emerges and stress stays low.
- Is the Red Whiptail Catfish suitable for beginners?
- Red Whiptail Catfish sits in the middle of the difficulty scale — manageable for a careful beginner who has done the reading, but it has specific needs worth researching first.