Grey Sandcat Whiptail

Limatulichthys griseus is the best-known member of its small genus, native to the Orinoco basin in Venezuela and Colombia. It is an unusual Loricariid in that its body surface texture is notably rougher and more granular than most whiptails — a characteristic that gives the genus its name (limatus = filed smooth / rough) and contributes to its effective camouflage on sandy river bottoms. Its uniform grey-tan colouration perfectly matches the sandy substrates it inhabits.

In the aquarium, Limatulichthys griseus is best kept over a fine sand substrate that replicates its natural sandy river habitat. It is a mid-sized species that requires good water quality and moderate flow. Unlike many loricariids that spend most time on driftwood, this species is primarily a sand-dweller and should be provided with open sandy areas in the aquarium.

This species is occasionally imported from Venezuela and Colombia and is of interest to hobbyists seeking unusual and less-commonly kept loricariid species. Its feeding behaviour is typical of loricariids — rasping algae and organic material from substrate surfaces. Breeding has not been widely documented in captivity.

Water: 23–28°C, pH 6.0–7.5, soft to moderate (GH 2–12); moderate Orinoco-type flow. Tank: 100 L minimum; large open sand area essential; some rock or wood for shelter. Feeding: Algae wafers, spirulina, sinking pellets; forages actively on sand surface. Breeding: Limited captive data; presumed sand or crevice spawner. Compatibility: Peaceful; Orinoco biotope community; avoid very small or delicate species.