poikilothermic

http://www.wikipedia.org/wiki/Poikilothermic.

click on Fish link

http://www.wikipedia.org/wiki/Fish

click on aquarium link

http://www.wikipedia.org/wiki/Aquarium


click on freshwater aquarium fish species link

http://www.wikipedia.org/wiki/Aquarium
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Cold-water fish

* Goldfish
* Koi
* White Cloud Mountain Minnow

Tropical fish

* Live-bearing
o Guppy
o Molly
o Platy
o Swordtail

* Egg-laying
o Cichlids
+ Angelfish
+ Discus
+ Oscar
o Tetras (Characidae)
+ Black Widow
+ Cardinal Tetra
+ Cave Tetra
+ Common Hatchetfish
+ Green Neon Tetra
+ Neon Tetra
+ Silver Dollar
o Labyrinth fish (Anabantidae)
+ Blue Gourami
+ Siamese Fighting Fish
o Barbs (Cyprinidae) and related
+ Pearl Danio
+ Tiger Barb
+ Zebra Danio
o Loaches (Cobitidae)
+ Clown Loach
+ Kuhli Loach
o Catfish (Siluriformes)
+ Armored Catfish (Callichthyidae)
# Peppered Cory (Corydoras paleatus)
+ Armored Suckermouth Catfish (Loricariidae)
# Bristlenose Catfish (Ancistrus dolichopterus)
+ Ghost Fish