Killi
ENCYCLOQUARIA . SCIENCE
The Art and Science of Aquaria
Other Families
Minor Families of Fishes








Channidae

Snakeheads









Indostomas

Paradox fish


Lebiasinidae
Lebiasinidae Lebiasininae
Lebiasinidae Pyrrhulininae

Pencilfish


Pencil fish, splashing "tetras" (not tetras) and related fishes.



Mormyridae
Mormyridae Campylomormyrus
Mormyridae Marcusenius Mormyridae Pollimyrus

Whales and Elephants


One of the most evolved and intelligent of fishes, all possess an electrical system used to at the very least serve as an addition sense. All are on different frequencies so the possibility exists they communication with some sort of fish wifi.

If you were intelligent and had something like this how cold you not use it for at least some soft of communication? This might explain the different frequencies?



Ophidiidae
Ophidiidae Neobythitinae
Ophidiidae Ophidiinae

Tusk eels

Included for completeness, these are some of the oldest fishes on earth. One holds the record for deepest fish ever found.


Pantodontidae
Pantodontidae Pantodon

Butterfly fish


Percidae
Percidae Denariusa
Percidae Etheostomatinae

Perches

Perch and perch-like fish.








Tarumaniidae

A family erected for a single primative species of fish nearly halfway between an eel and wolf fish (Holpias) that has an inflatable adipose fin.





cave
cave Amblyopsis cave Astynax cave Barbatula
cave Iranocypris cave Phreatichthys cave Prietella cave Typhlichthys

Blind fish

In several places around the world fish have evolved cit off from all light for a very long time. Although not necessarily related to each other there are grouped here instead out of ichthyological curiosity.

Oliver Lucanus wrote a good article about these fish here.