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Caquetaia myersi, also known as Basket Mouth, is a South American cichlid valued for its highly protrusible mouth and predatory appearance. Native to the upper Amazon basin, particularly the Caquetá River basin in Colombia, it remains uncommon in the aquarium trade. Its territorial behavior, adult size, and carnivorous diet make it a fish for experienced aquarists. This profile concerns specimens collected from the wild; careful acclimation, stable water conditions, and a spacious aquarium are therefore essential for long-term care.

General species description

Caquetaia myersi is a predatory cichlid in the genus Caquetaia. It is recognized by its strong head, large extensible mouth, and relatively deep body, all of which support the capture of prey. The species occurs in freshwater environments of the upper Amazon basin and is associated with quiet river sections, side channels, and vegetated margins. In aquaria, its behavior can become distinctly territorial, especially in mature fish or during spawning. Its moderate rarity in the hobby, combined with its wild origin, makes it suitable for aquarists able to provide a large aquarium and tank mates of comparable size.

Geographic origin and biotope

The known range of Caquetaia myersi is associated with northwestern South America, in the Caquetá River basin of Colombia, part of the upper Amazon drainage. The fish is linked to tropical freshwater habitats that include channels, floodplain areas, and river margins offering cover. These environments are generally characterized by warm water, variable light, submerged wood, leaf litter, and vegetation-covered banks. In an aquarium, clean, well-oxygenated, stable water is more important than reproducing the exact coloration of the natural water.

Precise location and local name

The geographic reference most directly associated with Caquetaia myersi is the Caquetá River in the Colombian Amazon basin. This origin explains the generic name Caquetaia, which refers to the river system and region. The English common name Basket Mouth describes its broad, strongly protrusible mouth, a feature that is obvious when the fish captures prey or investigates its surroundings. Apart from this trade name and its scientific name, no sufficiently precise local name is retained here.

Appearance and physical characteristics

Caquetaia myersi has a robust, laterally compressed body, a large head, and an especially broad mouth. Its jaws can project forward, which explains the English common name. Coloration varies with age, mood, and surroundings, generally showing gray, brownish, or olive tones with darker markings that may be more or less visible. The dorsal and anal fins become elongated in adults. The combination of a protrusible mouth, massive head, and predatory posture separates it from several Amazonian cichlids with a more delicate appearance.

General diet

In the wild, Caquetaia myersi has a mainly carnivorous diet. Its large mouth allows it to suction and swallow aquatic prey, including small fish and invertebrates. In aquaria, it generally accepts prepared carnivorous foods such as quality pellets, shrimp, worms, and prepared pieces of marine flesh. Feeder fish should be avoided because they can introduce parasites and provide an unbalanced diet. Offering small regular portions rather than excessive meals helps protect water quality and maintain good body condition.

Essential data

• River of origin: Caquetá River
• Local name used: Basket Mouth
• Origin of the scientific name: The genus Caquetaia refers to the Caquetá basin; myersi honors the person named Myers.
• Etymology of the full name: Caquetaia refers to the Caquetá region and river system; myersi is a patronymic honoring Myers.
• Common/vernacular names: Basket Mouth
• Family: Cichlidae
• Subfamily: Cichlinae
• Name pronunciation: ka-keh-TAY-ah - MY-er-see
• Discovery: Leonard Peter Schultz, 1944
• Maximum adult size: About 30 cm
• Water temperature and pH: 24 to 28 °C; pH 6.0 to 7.5
• Watercourse appearance and surrounding vegetation: Tropical freshwater, submerged wood, leaf litter, and densely vegetated banks
• Typical tank mates: Robust Amazonian cichlids of comparable size; large peaceful catfish; characins too large to be swallowed
• Temperament and behavior: Predatory, territorial, and potentially aggressive toward small fish
• Water depth: Marginal areas and quiet sections of waterways
• Sexual dimorphism: Limited in juveniles; adults may differ in size and fin development
• Bottom structure and flow: Sand, mud, plant debris, and wood; slow to moderate flow depending on the area

In your aquarium

Success with Caquetaia myersi begins with a very spacious aquarium, efficient filtration, and a sturdy layout. Provide roots, retreats, and moderate circulation while preserving quieter areas. Tank mates should be robust and large enough to avoid predation. A varied meaty diet, regular water changes, and gradual acclimation are essential for wild specimens. Because the species is uncommon in the aquarium hobby, thoughtful maintenance is preferable to keeping it with fragile or undersized fish.