Physically, they are quite small and rather stocky in build, although light. Their height rarely exceeds 3.5 feet and they have a negligible weight of about 20-30 kg. They have a body markedly compressed at the hips, but the most distinctive feature is undoubtedly their mouth, armed with a row of very sharp large triangular teeth.
Adults have a gray livery with silver mottled scales and reddish hues on the belly, while juveniles have just darker spots. Like few other Anthros, they have kept a reproduction by oviparity and females lay a pair of eggs in a water basin after fertilization has occurred through sexual acts. Additionally, like others belonging to the Gilleds subgenus, they have developed legs and a double breathing system thanks to a sort of primitive lung, similar to that of animal-lungfish. They can live out of water up to ten days, but they have a constant need to fully bathe their body at least once a day.

Piranha people, in addition to being known as Anacondas' flatterers and pages due to their nature as scavengers, are also considered "Mogress prehistory's sailors", but this erroneously limit their prowess to this region. Their trading areas, instead, include the coasts of Varooy and Sarema, and some portions of Göenar. Before annexation to Labax, Piranhas grouped into family clans called cacicazgos, maintaining alliances as federated peoples. They usually reside in villages where their bahareque, huge huts built of mud reinforced with palm leaves, are scattered among the great rivers of the region, and are often very close to each other.

They have a habit of not covering their genitals or buttocks, and usually only elders and adults cover themselves with skirts, while fingerlings, young unmarried females, and youngsters who have recently become warriors, stay naked. They often use vegetable and mineral pigments for cosmetic dyes, which provide protection against insects and serve as identifiers of family, tribe, and clan. They also usually pierce their nose and earlobe, use crowns made of different materials, masks, feather tiaras, bracelets, and other pendants. A disturbing tradition of the Piranha people, which has labeled them as the dreadful killers they really are not, is the "Anthro taxidermy". It's an art they consider as a means of capturing a victim's spirit and which brings them to flaunt their enemies' mummified heads in reduced size.

They speak the Itthen language, common to all Anthro fish races, a guttural language accompanied by strong facial expressions, understandable even underwater where sounds are less easy to hear (perhaps a Japanese gibberish).

Religiously they are mostly devoted to Thialon (deity of tyranny and ambition), Teeje (deity of piracy and looting), Kalaukeke (deity of competition and battle) and Madra (deity of deceit and corruption), but here and there still thrive many traditional cults of Lohudonist animism.

Their ancestral princes were Ye'kuan and Carijona, who taught their race the ultimate importance of the shoal, as well as the importance of exploiting resources. In a Piranha's life, solitude must be rare and highly sporadic, but even more important in their life is the ability to exploit what others discard. From food to raw materials, from territories to slaves, Piranha people is founded of scavengers and scroungers who must help societies to never waste anything at all.

Footnote
Typical of Piranha people is the use of a boat called Soitheach, a coastal transport built with a long, hydrodynamic bow and a very short stern, equipped with a long conical turbine, manually operated, which allows a high speed in shallow water but poor maneuverability in open sea.