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Distribution
Described from the lower rio Tocantins near the city of Cametá, Pará state, northern Brazil and occurs throughout the lower part of that system. Although definitive details are lacking, it’s also thought to range throughout much of the Amazon basin with similar-looking fishes being exported from as far afield as Peru.
Habitat
Mostly inhabits slower-moving sections of rivers and tributaries and apparently often associated with human settlements.
Maximum Standard Length
600 – 1000 mm; captive specimens measuring towards the upper end of this range are very rare, though the lower figure is certainly attainable.
Aquarium Size
For an adult specimen aquarium base dimensions in excess of 600 cm x 200 cm are required, meaning this species is largely unsuitable for private aquaria.
Maintenance
Prefers dim lighting and access to refuges in the form of driftwood, large rocks or lengths of plastic piping. Juveniles can be kept in planted aquaria but adults are likely to consume or uproot any vegetation. An enormous filtration system and dedicated regime of water changes will also be required and maintenance of high dissolved oxygen levels is mandatory given the species‘ natural habitat and the fact that unlike some relatives it cannot respire atmospheric oxygen.
Water Conditions
Temperature: 23 – 30 °C
pH: 6.0 – 7.5
Hardness: 36 – 215 ppm
Diet
This species is a generalised detrivore, so offer a varied diet comprising dried, frozen and live foods including sinking tablets, wafers, slices of fruit and vegetables plus meatier fare such as bloodworm, earthworms, prawns, cockles and lancefish. In nature it is reputed to occur close to settlements and feed on human refuse/organic waste at some localities.
Growth may be inhibited if meal size and feeding frequency are insufficient. When purchasing loricariid catfishes, check that the belly and/or eyes do not appear sunken since these are typical signs of malnourishment.
Behaviour and Compatibility
Juveniles tend to be quite peaceful but become more territorial and aggressive as they mature, meaning adults should be maintained singly and unless the aquarium is of public aquaria magnitude, in the absence of other substrate-dwellers. The most suitable tankmates are large, robust, pelagic fishes from genera such as Cichla, Osteoglossum, Brycon, Acestrorhynchus, etc.
Sexual Dimorphism
Males may develop more extensive odontal growth on the pectoral rays, cheeks and body and exhibit more territorial behaviour once sexually mature. The most reliable method is examination of the genital papilla, which in males is comparatively blunter in shape.
Reproduction
Has been achieved but little information is available. Apparently a cave spawner with the male responsible for guarding and tending the eggs.
Acanthicus adonis - Polka Dot Lyre Tail Pleco
- Brands Fixexotic
- Model: Acanthicus adonis - Polka Dot Lyre Tail Pleco
- Availability: In Stock