Black Adonis Pleco (Acanthicus hystrix)

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Black Adonis Pleco

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Lyre Tail Pleco

Acanthicus hystrix


567.8 Litres (150 US G.)

50.8-61cm (20-24 ")




6.0 - 7.8

293.15 K
68 °F
527.67 °R
303.15 K
86 °F
545.67 °R

9-19 °d

1:1 M:F


5-8 years

Additional names

Lyretail Pleco, L155, Carachama, Carachama Mama

Additional scientific names

Rinelepis acanthicus


A South American fish, found throughout the Amazon River basin.


Mature males may be more spiny than females, but they are challenging fish to sex. There are no known records of this fish being bred successfully in captivity.

Tank compatibility

A dominating territorial species of Pleco. Best not kept with other Plecos at all, they could easily be attacked. Due to their size, more than one of this Pleco should not be attempted in any less than 2271.2 Litres (600 US G.). Larger robust but not aggressive mid to top swimming tank mates should be left alone. This Pleco should not be kept with smaller fish.


Not a fussy feeder, will take anything from fruit and vegetables to pellets, frozen or live foods, even pieces of fish.

Feeding regime

Feed once or twice a day. Keep this fish well fed, an underfed fish will be more aggressive towards tank mates.

Environment Specifics

Prefers a large and well filtered mature tank with very large heavy pieces of bogwood and rocks as décor, no planting as it will get ripped up. Sand is the best substrate for them and they do not appreciate very bright lighting.


Highly aggressive towards other Catfish and Plecos.


Very similar to the Acanthicus adonis but without the white spots. Extended dramatic tail and "spines" down the length of the body.


External links