Edit Serrasalmus rhombeus
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Name
Scientific name
Serrasalmus rhombeus
Described by
Not recorded
Family
Serrasalmidae
Common names
Black Piranha/Rhom
Photograph credits
All 2 credited
Summary
Serrasalmus rhombeus, known as the black piranha or rhom, is a large piranha recorded from much of northern South America. It occurs in num…
Size and aquarium
Maximum size
450mm, standard length
Aquarium size
Minimum length 210 cm, Minimum depth 45 cm, Minimum height 45 cm
Water
Water conditions
22.2–27.8°C
Hardness
1–20dGH
Conductivity
Not recorded
Behaviour
Temperament
Species tank only
Social needs
Solitary or specimen
Community suitability
Not recorded
Where it lives
Countries, regions, rivers and lakes
Amazon, Negro, Orinoco
Writing
Etymology
Not written yet
Distribution
This species is widespread in nature although the true extent of its range is an issue for debate. Officially it's been recorded from Venezuela, Guyana, Surina…
Habitat
Inhabits a range of biotopes but as an adult is particularly associated with larger, deeper river channels where it's typically found hunting in deep water or …
Aquarium size
This is an active, riverine species. A single, fully-grown adult would need a tank measuring upwards of 210 ∗ 45 ∗ 45 cm to itself.
Maintenance
Requires a well-oxygenated set-up, ideally furnished with a sandy substrate and some driftwood roots and branches to provide cover. You can attempt to grow aqu…
Water conditions
Temperature: 22.2 – 27.8 °C pH: 4.5 - 7.5 Hardness: 1 - 20°H
Diet
Wild fish are opportunistic, feeding on the fins and flesh of other species as well as smaller fishes, insects and crustaceans. They have also been recorded sc…
Behaviour and compatibility
Should only be considered as a specimen fish for the enthusiast since it doesn't make a good tankmate for anything else. Scattered reports of it coexisting wit…
Sexual dimorphism
No external sexual differences between the sexes have been recorded although females in spawning condition are usually plumper than males.
Reproduction
This species has only rarely been bred in captivity with the main restriction appearing to be the volume of water required to avoid the fish murdering one anot…
Notes
There are in excess of 30 described species of Serrasalmus many of which appear superficially similar and have confusing taxonomic histories. S. rhombeus is am…
References
References
No references