Description

Lamontichthys filamentosus (Sturgeon Kite Whiptail)

Species Profile:

If the Twig Catfish is nature’s attempt at a stick, the Sturgeon Kite Whiptail is its attempt at a high-performance glider. Often cited as one of the most elegant catfish in the hobby, Lamontichthys filamentosus is famous for its “filaments”—extraordinarily long extensions on the pectoral, dorsal, and caudal fins that can grow several inches beyond the body itself.

Resembling a prehistoric sturgeon from above and a delicate kite from the side, this is a specialist species for the aquarist who values grace and unique geometry.

Vital Statistics

Appearance: The Aquatic Glider

The “Kite” part of their name comes from their dramatic silhouette.

• The Filaments: These thin, trailing threads on the fins are their most striking feature. In a well-oxygenated tank with a decent current, these filaments stream behind the fish like ribbons.

• The Body: Flattened and broad across the head, tapering down to a very thin peduncle (the “wrist” of the tail). Their colour is usually a sophisticated mottled grey or sandy brown, designed to blend into riverbeds.

Specialist Care: “The Oxygen Factor”

The Sturgeon Kite Whiptail is significantly more demanding than your standard Peppered or Schwartz’s Catfish. They hail from the fast-flowing, oxygen-rich rivers of the Upper Amazon basin.

1. High Flow and Oxygen

They have very little tolerance for stagnant water. You need a “powerhead” or a very strong filter return to create a “river” effect. If they are seen gasping at the surface, the oxygen levels are critically low for their metabolism.

2. Surface Area

Unlike other whiptails that might hide in the plants, Lamontichthys prefers to sit on flat, smooth surfaces in the direct path of the current.

• Ideal Decor: Large, flat river stones or broad-leafed plants like Anubias.

• Avoid: Small, “fiddly” hardscape that doesn’t allow them to spread their massive pectoral fins.

3. Water Stability

They are exceptionally sensitive to nitrates and dissolved organics. Weekly 30–50% water changes are essential. They are often used as “indicator fish”—if they look stressed, your water quality likely needs immediate attention.

Diet and Feeding

These are “Aufwuchs” grazers, meaning they spend their day rasping at the film of algae and microorganisms on surfaces.

• Main Diet: High-quality algae wafers and spirulina tablets.

• Protein Boost: They appreciate frozen Daphnia or Artemia occasionally, but too much heavy protein can cause digestive issues.

• Natural Algae: A tank with a healthy (but controlled) growth of green algae on the glass or rocks is paradise for them.

Maintenance with your Superfish Scissors

Keep the “Runways” Clear: Because the filaments of the Sturgeon Kite Whiptail are so long and delicate, they can easily become snagged on overgrown or dying plant matter. Use your Plant Scissors to keep your “river” scape tidy. Trimming back trailing mosses or bushy stem plants ensures your Whiptail has a clear “flight path” to glide from one stone to another without damaging those magnificent fin extensions.

Compatibility

They are entirely peaceful but should only be kept with other “high-flow” loving fish.

• Perfect Mates: Hillstream Loaches, larger Tetras, or the Melon Barb (provided the flow isn’t too much for the Barbs).

• Avoid: Any nippy fish (like certain aggressive Barbs or Serpae Tetras) that might find those long filaments an irresistible target for a “snip.”

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