Whiptail catfish (Rineloricaria spp.) care guide

Group
Freshwater fish
Other names
Whiptail catfish, Whiptail, Red whiptail (L010A), Red lizard catfish (L010A), Rineloricaria lanceolata
Family
Loricariidae (suckermouth armoured catfishes)
Origin
Tropical South America and southern Central America, from Panama and north-western Colombia to Argentina and southern Brazil.
Water
freshwater
Maximum size
11 cm
Temperature
25–28°C
pH
6–8
Hardness
5–20 dGH (R. lanceolata)
Minimum tank
50 litres
Care level
beginner
Temperament
peaceful

Care

Whiptail catfish are flat, slender suckermouth catfish with a long tail stalk and, in many species, a long filament on the upper tail lobe. The genus is large: PlanetCatfish's Cat-eLog lists around 90 species and L-number forms. Most species sold reach about 9–11 cm standard length, but figures vary by species and form, so check the species or L-number before buying. Common trade fish include R. lanceolata (about 9.5 cm, one of the most common fish sold simply as "whiptail catfish") and the red whiptail or red lizard catfish, L010A (about 11 cm). L010A is a red form that is thought to be bred in captivity; its exact origin is unclear and it is quite different from L010. For R. lanceolata, Seriously Fish suggests a tank with a base of at least 45 × 37.5 cm (around 50 litres) for a pair, more for a group, with 25–28 °C, pH 6–8 and 5–20 dGH. Use sand or fine gravel with some flat stones, wood and leaf litter, and provide half-pipes or tubes as shelters and spawning sites. Keep the water clean and well oxygenated. Males develop short bristles (odontodes) on the head and the pectoral fins, which females lack. Sources: PlanetCatfish (planetcatfish.com/common/species.php?speciesid=747 and speciesid=2394); Aquatic Republic genus listing (aquaticrepublic.com/rineloricaria); Seriously Fish (seriouslyfish.com/species/rineloricaria-lanceolata/). Checked October 2026.

Diet

Omnivores that graze biofilm and pick up small invertebrates. Feed sinking pellets and wafers, vegetables such as blanched courgette, cucumber, spinach or kale, plus frozen or live bloodworm and Daphnia, and flake that reaches the bottom. They are slow feeders, so make sure food is not all taken by livelier fish.

Breeding

Many species breed readily. The male guards the eggs inside a cave, often a pipe about 25 mm across, and fans them until they hatch in about 4–5 days; the fry become free-swimming two to three days later. L010A has many breeding reports. The fry are harder to raise: they need constant access to fine food (crushed tablets, vegetable matter, newly hatched brine shrimp) and excellent water quality.

Compatibility and tank mates

Among the most peaceful catfish and not territorial. Good with small, calm community fish such as tetras, pencilfish, rasboras, Corydoras and dwarf cichlids. Avoid boisterous fish and large plecos that out-compete them for food.

Last updated 5 October 2026. Community-edited care guide on Aquatic-Auctions.

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