Hypancistrus sp. L-236 SW

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Hypancistrus sp. L-236 SW, also known as the Super White Hypan, is a highly sought-after Hypancistrus form associated with the Rio Xingu basin in Brazil. Its white-and-black pattern, more strongly contrasted than that of many other Hypancistrus, makes it a striking fish for a specialized Amazonian aquarium. This loricariid is nevertheless a demanding bottom-dweller that prefers warm, highly oxygenated and very clean water. Very rare in the hobby, it is offered exclusively by Ton.Fish in Canada, providing aquarists with an opportunity to acquire a distinctive strain.

General species description

Hypancistrus sp. L-236 SW is a small to medium-sized loricariid traded under the aquarium code L-236 SW. The abbreviation “sp.” indicates that it is kept under a provisional species name, while “SW” refers to the commercial name Super White. This form is valued for its strong contrast and robust body shape, typical of Hypancistrus. It is mainly crepuscular and nocturnal, remaining close to shelters during the day. A mature, stable and well-maintained aquarium is essential, as this rare variety should not be treated as merely an algae-eating fish. Adult males may also defend a spawning cave.

Geographical origin and biotope

Country of reference: Brazil. The L-236 form is associated with the Rio Xingu basin, an Amazonian river characterized in many areas by warm, clear to slightly amber water and strong oxygenation over rocky sections. The biotope includes rock outcrops, boulders, cracks and current-swept areas where the fish holds onto hard surfaces with its sucker mouth. Aquatic vegetation may be limited in heavily rocky areas, while riverside vegetation provides shade and contributes organic debris. In the aquarium, smooth rocks, tubes and shelters reproduce this environment more effectively than an open layout.

Precise locality and local name

In the aquarium trade, L-236 is associated with the Rio Xingu in Brazil. The L-236 code comes from the numbering system used to identify loricariids with distinctive appearances before their complete scientific determination. The most common commercial name for this form is Super White Hypan, while L-236 SW remains the reference designation among breeders and aquarists. This name describes a predominantly white selection; it is not, by itself, an official taxonomic name. Stock should be identified carefully to preserve strain traceability.

Appearance and physical characteristics

Hypancistrus sp. L-236 SW has a flattened body, a broad head and a mouth adapted for adhering to hard surfaces. Its coloration consists of a very bright white base with black spots or markings, with individual variation in the width and arrangement of the pattern. Like other Hypancistrus, it has bony plates and fins with strong rays. Adult males may develop more pronounced odontodes on the cheeks and along the body, especially during breeding. The expected adult size in aquaria is approximately 12 to 14 cm, depending on the strain and rearing conditions.

General diet

This form is omnivorous with a carnivorous tendency and should not be fed algae alone. Its diet should include sinking, protein-rich wafers, frozen foods such as bloodworms or shrimp, and quality prepared foods. Small portions offered after the lights go out make it easier for the fish to feed, since it is most active in the evening and at night. Juveniles benefit from regular meals, while adults should receive a varied diet without excess. Very clean water is especially important after protein-rich meals. Dietary variety and removing leftovers are two essential points.

Essential data

• River of origin: Rio Xingu
• Local name used: Super White Hypan; L-236 SW
• Origin of the scientific name: Hypancistrus is the genus name used for this group of loricariids; the identification remains associated with the L-236 SW aquarium code.
• Complete-name etymology: Hypancistrus comes from the Greek hypo, “under,” and ankistron, “hook,” referring to odontodal structures; sp. means unspecified species; L-236 is an aquarium code; SW means Super White.
• Common/vernacular names: Super White Hypan; Super White Hypancistrus
• Family: Loricariidae
• Subfamily: Hypostominae
• Pronunciation: hi-pan-SIS-trus sp. el two three six ess double-you
• Discovery: Form circulated in the aquarium trade under the L-236 code.
• Maximum adult size: Approximately 12 to 14 cm
• Water temperature and pH: 27 to 30 °C; pH 6.0 to 7.5
• Watercourse appearance and surrounding vegetation: Warm, oxygenated water, rocky areas, boulders and cracks; riverside vegetation is often more prominent than aquatic vegetation.
• Typical tankmates: Small Amazonian characins, peaceful dwarf cichlids, other calm loricariids, non-aggressive midwater fish
• Temperament and behavior: Peaceful, secretive and mainly nocturnal; territorial around caves, especially in adult males.
• Water depth: Shallow to moderately deep areas associated with rocks and shelters.
• Sexual dimorphism: Adult males are generally broader-headed, with more developed odontodes on the cheeks and body.
• Bottom structure and flow: Rocky or gravelly bottom, numerous hiding places and moderate to strong current; high filtration and oxygenation are recommended.
• Availability: Very rare; offered exclusively by Ton.Fish in Canada.

In your aquarium

Success with Hypancistrus sp. L-236 SW depends on a mature aquarium, effective filtration and a steady supply of oxygen. Provide several caves, moderate lighting and foods suited to its nocturnal activity. Avoid aggressive or overly competitive bottom-dwelling tankmates. Parameter stability is more important than frequent adjustments: warm water, excellent cleanliness and regular water changes are the foundation of long-term care. Because this is a very rare fish, rigorous maintenance also helps preserve the value and quality of this Super White strain.