Marble Whiptail

Geographic Origin and Biotope: Species with a vast range in South America (Orinoco, Amazon, Paraná basin). Prefers sandy or muddy bottoms in slow river stretches, stream banks, and open lagoons, where it buries itself almost completely to hide.

Taxonomy and Morphology: Loricariinae subfamily. Elongated and flattened shape, reaches 25 cm (10 inches). The key feature is the mouthparts: the lips are expanded and equipped with countless long fleshy tentacles (fringes), evolved to detect food by sifting sand. The tail has a very long upper filament.

Social Behavior: Peaceful and indolent. Spends the day camouflaged or buried in the sand leaving only the eyes out. At night it comes out and patrols the bottom in search of debris. Harmless to fish and plants, gregarious with its own kind.

Coloration and Sexual Dimorphism: Exceptional camouflage: beige, sand, or light brown with large dark spots and marbling. Dimorphism evident in breeding: males have hyper-developed lower lips (to carry eggs) and a broader, more hirsute snout.

Tank Setup: Essential 120 cm (48 inches) tank with FINE SAND BOTTOM. Sharp gravel or stones ruin their lips and belly. Leave wide open spaces without plants on the bottom to allow burying. Branched wood and oak leaves on the bottom.

Feeding and Diet: Detritivore micro-predator. In nature, it sifts mud for worms and crustaceans. In the aquarium offer frozen bloodworms, tubifex, mixed bottom tablets. It DOES NOT feed solely on algae on the glass.

Water Quality: Very adaptable: tolerates pH 6.0-7.5 and hardness up to 15 GH. Ideal temperatures 24-28°C (75-82°F). Requires a clean bottom (siphon regularly) to avoid bacterial infections of the barbels.

Compatibility and Cohabitation: Excellent with Characins (Tetras), Corydoras, Apistogramma. Not to be combined with large territorial Loricariids, aggressive Cichlids, or highly ravenous fish that would consume all bottom food.

Aquarium Reproduction: Very rare species due to its behavior: it is a lip-brooder. The female lays a cluster of adhesive eggs. The male collects them and glues them to his enlarged lower lip, carrying and fanning them continuously for 10-15 days until hatching. The young need immediate micro-food.

Risks and Diseases: Starvation and atrophy in tanks with fast fish. Risk of fungal infections if barbels are scratched on rough gravel or dirty, anoxic bottoms.