Species description

Care, breeding and tankmates

Fish profile

Temperament

Semi-aggressive

They are incredibly docile, highly cryptic, and rely entirely on their stick-like camouflage for protection. They are completely non-aggressive and will not bother any other inhabitants, even tiny shrimp. They can be easily outcompeted and stressed by active, boisterous tank mates.

Diet

Herbivore

They are dedicated herbivores that spend their entire day rasping soft algae and biofilm from wood. Their diet requires constant supplementation with blanched spinach, zucchini, and high-quality spirulina sinking wafers. Protein-rich foods should be strictly avoided to prevent severe digestive blockages.

Sex ratio

Solitary

They are completely indifferent to conspecifics and can be kept in any sex ratio without aggression. Keeping a small group is visually striking, provided the tank is large enough to supply adequate algae. A single specimen will also do perfectly fine on its own.

Feeding frequency

Twice daily

Due to their slow feeding habits, they need constant access to grazing surfaces or vegetable supplements. Providing fresh vegetable slices overnight ensures they can eat peacefully without competition. Uneaten food must be removed promptly the next morning to avoid ammonia spikes.

Bioload

Mariaelena's twig catfish produces a minor bioload, typical of small, specialized grazing Loricariids. They are extremely intolerant of fluctuating water parameters and require highly stable, pristine conditions. Gentle but effective filtration with rigorous weekly water changes is absolutely mandatory.

Flow

Stagnant

They prefer a gentle, steady, and highly oxygenated water flow simulating calm river tributaries. Violent currents will stress them and make it difficult for them to cling to vertical surfaces. A spray bar attachment is highly recommended to distribute the filter return gently.

Reproduction

Oviparous

Breeding this specific species is rare but follows the typical Farlowella pattern of egg deposition on flat surfaces. The male takes full responsibility for guarding and cleaning the eggs until they hatch. The fry are incredibly sensitive and require microscopic green water and biofilm immediately.

Compatibility & tankmates

They are completely peaceful and utterly defenseless against any moderately aggressive or fast-moving fish. They thrive only in very peaceful community tanks with small rasboras, tetras, or dwarf shrimp. Avoid keeping them with active bottom-feeders that will steal their food.

Tank level

Middle/Bottom

They are specialized structural dwellers, spending their time clinging vertically to tall plants or driftwood. They rarely rest directly on the substrate unless moving between perches. An aquarium heavily decorated with vertical branches and tall Vallisneria is highly recommended.