Our animals

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Northern lakes and seas

The ocean

Tropical rivers and lakes

Select aquaria

Dwarf mormyrid

Electric eel

Cave tetra

Neon tetra

Arowana

The interesting species of the river

Arapaima

Piranha

Stream aquarium

Under the riverbank

River cichlids

The plants in the river

Select species

Select a species to read more


Mata Mata

Mata Mata

Tiger limia

Tiger limia

Redtail splitfin

Redtail splitfin

Redtail splitfin

Redtail splitfin

Montezuma swordtail

Montezuma swordtail

Montezuma swordtail

Montezuma swordtail

Flash Pleco

Flash Pleco

Redtail splitfin

Redtail splitfin

Facts

LatinXenotoca eiseni
Size7 cm
FoodSmall crustaceans, insects and worms
HabitatRivers and streams
IUCN

Not evaluated

LocationMexico
Map

Notched fin

It is easy to tell the difference between a male and female redtail splitfin. The male’s anal fin has a notch in it. This small part of the anal fin is used to transmit sperm to the female during mating.

Umbilical cord

Most fish lay eggs, but not the redtail splitfin. The unborn young grow inside the female and receive nourishment via trophotaeniae, which connect the mother to the young – like an umbilical cord in mammals.


Angelfish

Armored predators

Discusfish

Veiled chameleon

African river

Archerfish

Endangered species

Lake Tanganyika

Lake Malawi