Crenicichla tendybaguassu

A Little More Information...

The Big Lips Pike Cichlid, also known by the scientific name Crenicichla tendybaguassu, is a South American predatory cichlid associated with the Rio Paraná basin in Argentina. Its elongated body, expressive head and unusually developed lips give it a distinctive appearance among the pike cichlids of the genus Crenicichla. This species is best suited to experienced aquarists, especially because of its territorial and piscivorous behavior. The specimens offered here are wild collected, and this availability is exclusive to Ton.Fish in Canada. With a rarity rating of 2 out of 3, it is less commonly encountered than many popular South American cichlids.

General description

Crenicichla tendybaguassu is a medium to large pike cichlid built for quick movement and ambush hunting. Like several Crenicichla species, its streamlined body allows sudden acceleration among rocks, branches and vegetation. Its common name, Big Lips Pike Cichlid, refers directly to its thick lips, which create its highly distinctive profile. In an aquarium, it should be treated as a territorial predator, not as an ordinary community cichlid. A structured layout, hiding places and open swimming space are essential. Wild specimens may also require gradual acclimation and suitable food before accepting prepared diets consistently.

Geographic origin and biotope

The species is associated with the Rio Paraná basin in Argentina, within a South American freshwater system where rocky sections, debris-covered banks and quieter areas occur together. Its natural habitat provides cover that allows this predator to monitor its territory while reducing exposure. For aquarium keeping, a stable temperature of 22 to 28 °C and a pH around 6.5 to 7.5 provide a practical starting point. Efficient filtration is important because protein-rich meals quickly increase the organic load. Wild specimens benefit from excellent water quality, slow acclimation and moderate, well-oxygenated circulation.

Precise locality and local name

The geographic reference to remember is the Rio Paraná in Argentina, within the broad Paraná–Paraguay drainage. The local designation most directly associated with the species is its scientific name, while tendybaguassu is Guaraní in origin and refers to the fish’s large lips. The English name Big Lips Pike Cichlid is mainly used in the aquarium trade and English-language literature. This regional origin should be considered when selecting tank mates: robust fish of comparable size are preferable to small species that may be viewed as prey. Current availability is exclusive to Ton.Fish in Canada.

Appearance and physical characteristics

The body of Crenicichla tendybaguassu is elongated, laterally compressed and finished by a relatively large head. Its prominent mouth and thick lips are its most recognizable traits. The general coloration remains subdued and natural, helping it blend with dark substrates, rocks and submerged wood. The dorsal and anal fins extend the body profile and reinforce its predatory appearance. As with other pike cichlids, its coloration may change with mood, stress, hierarchy or breeding activity. A subdued aquarium with hiding places and moderate lighting often makes its details easier to observe. Allow for an adult size of about 20 cm and provide generous bottom space.

General diet

Crenicichla tendybaguassu has a primarily carnivorous and piscivorous diet. In an aquarium, young fish can be offered appropriately sized frozen foods such as krill, chopped shrimp, mussel or quality fish pieces. Adults will generally accept well-formulated carnivore pellets, although these should complement rather than replace dietary variety. Meals should remain moderate to prevent obesity and water-quality problems. Feeder goldfish and similar routine feeder fish are best avoided because they may be nutritionally unbalanced or introduce parasites. A sensible feeding schedule, including occasional rest days, supports the condition of this active predator and helps reduce digestive problems.

Essential data

• Name of native river: Rio Paraná
• Local name used: Tendybaguassu
• Origin of the scientific name: A name established within the taxonomy of the pike cichlids of the genus Crenicichla.
• Etymology of the full name: Crenicichla is formed from Greek roots associated with cheek and fish; tendybaguassu is a Guaraní term associated with large lips.
• Common/vernacular names: Big Lips Pike Cichlid; big-lipped pike cichlid.
• Family: Cichlidae
• Subfamily: Cichlinae
• Name pronunciation: kree nee SIK lah - ten dee bah goo AH soo
• Discovery: Sven O. Kullander, 1982
• Maximum adult size: About 20 cm
• Water temperature and pH: 22 to 28 °C; pH 6.5 to 7.5
• Appearance of the watercourse and surrounding vegetation: Freshwater habitats with rocky sections, submerged wood, plant debris and vegetation along the banks.
• Typical tank mates: Crenicichla lepidota, Australoheros facetus, Geophagus brasiliensis, Hoplias malabaricus
• Temperament and behavior: Territorial and predatory, usually defensive toward similarly shaped fish or smaller tank mates.
• Water depth: Shallow to moderately deep areas near cover and the bottom.
• Sexual dimorphism: Difficult to identify in juveniles; adults may differ in size and proportions, but reliable sexing requires experience.
• Bottom structure and flow: Sand, gravel or debris with rocks and wood; moderate flow with locally stronger circulation.

In your aquarium

Success with Crenicichla tendybaguassu depends on a spacious, well-filtered aquarium furnished with secure hiding places, wood and open swimming areas. Small fish should be avoided, and compatibility must be monitored carefully, particularly when a pair forms or a territory is established. Stable water, a varied meaty diet and patient acclimation are priorities for a wild-caught specimen. Because this species is relatively uncommon in the trade, each individual deserves attentive care and regular water changes.