whalefish and black knife fish???

any info on them plz its hard to find

 

Im pretty sure whale fish have the ability to shock other fish electicaly. If your thinking of the same one i am

 

Are you talking about baby whales? They, like elephant nose fish are Mormyrids, fish that are electrogenic, but not not enough to damage tankmates, it is used for communication...they need a large tank at least 29 gallons. Baby whales should either be kept singly or in a group of 4 or more, as they are aggressive to other baby whales. I had an elephant nose that was pretty cool. Here is a link on info:
http://www.wetwebmedia.com/FWSubWebIndex/mormyrids.htm

 

Baby Whale[Pictures]
Pollimyrus isidori
SYN: Mormyrusisidori
PD: A bullet-shaped species with strong lateral compression and a long, slender caudalpenuncle.The head and snout are rounded and the mouth is small. The anal and dorsal fins are locatedfar back on the body and are opposite one another. The body color is light gray to gray-brown and can be speckledwith small dark spots.The fins are brown and the caudal fin is forked. A faint red stripe extends from thecaudal penacle to the gill cover.
SIZE: To 6" (15 cm) in nature, although rarely larger than 3.5" (9 cm) in captivity.
SS: Marcuseniusspecies, Hippopotamyrusspecies, Petrocephalusspecies, and other Pollimyrus species.
HAB: Africa; Lower Nile, Upper Zambezi
S: bottom, middle
TANK: A 28" (71 cm) or 20-25 gallon (76-95 L) tank is sufficient. Follow suggestions for G. petersii.
WATER: pH 6-8 (7.5), 4-18 dH (10), 77-84°F (25-29°C)
SB: A peaceful, schooling fish recommended for a community tank. This species should be kept singly orin groups of five or more.It is important to provide a retreat for each fish. Larger Mormyrids tends to harass thisgentle, but territorial species.A nocturnal species.
SC: See M.macrolepidotus.
FOOD: Live; Tubifex,other worms, insect larvae, Artemia; occasionally flakes. Feedafter the lights are off.
SEX: Unknown
B: Unknown
BP: 10.Breeding has not been successful.
REMARKS: An easy fish to keep, although it is sometimes intolerant of unfavorable waterconditions.
DC: 5.This interesting species requires a diet of live foods