Black ghost knifefish — size comparison

The black ghost knifefish has an elongated black body without a dorsal fin. A long undulating anal fin runs underneath. White marks occur on the head and as two

Silhouette comparison

Length

od końca pyska do końca płetwy ogonowejScale for the stated dimensions · each animal is labelled

Black ghost knifefish

Woda słodka

Apteronotus albifrons

ok. 30 cmOsobnik opisanego wariantu · ilustracja przykładu, nie pomiar konkretnej ryby
total length

od końca pyska do końca płetwy ogonowejMeasurement: side

Mass
Nie ustalono dla tego punktuMasa nie wyznacza skali
The stated dimensions share a scale without a common ground line. Bank card · long edge 8.56 cm
Measurement comparisonScale in cm
0102030
Black ghost knifefishTotal lengthapprox. 30 cm
Bank cardLong edge of the card8.56 cm

The scale compares the named dimensions. View direction and measurement points are given for each animal.

Scale based on the stated dimensions for each animal

Bank card · long edge 8.56 cm
Black ghost knifefish — size comparison — facts and sources

The black ghost knifefish has an elongated black body without a dorsal fin. A long undulating anal fin runs underneath. White marks occur on the head and as two narrow-tail bands.

It inhabits Amazonia and Paraguay-Paraná basins, including fast sandy streams. Nocturnal insect-larva hunting uses a weak electric field and electroreceptors detecting environmental changes.

Długość całkowita (TL): od końca pyska do końca płetwy ogonowej. Przykład, nie średnia populacji. Widok przedni ma przybliżone proporcje.

Measurement sources