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[Immortal]

Με παρεξηγησες, δε μίλησα για νανισμο, στην αιχμαλωσία δεν πάει παραπάνω το BGK. Παράθεση απευθείας από Wikipedia:

Black ghost knifefish require a medium sized tank of 30-40 US gal (95-110 litres) when smaller, thoughas they grow larger will require a much larger tank of

around 80-90+ US gal [3] . A lid is needed as theyhave been known to jump out. Black Ghost knifefish get to a maximum size of 20" in the wild, but usually stop growing at 12" in home aquaria, although theymay grow to 15" in a larger tank.