Any particular shark?! You can search for things previously posted on the site or if you know exactly what your looking for and have questions I'm sure someone can give you answers!
Black shark (Labeo chrysophekadion), a tank bully, very adaptable. Max size 36", 15 1/2 pounds. this picture by Jean-Francois Helias shows an adult, breeding male
Black shark (Labeo chrysophekadion), a tank bully, very adaptable. Max size 36", 15 1/2 pounds. this picture by Jean-Francois Helias shows an adult, breeding male
Bala shark (Balantiocheilos melanopterus), active (very) and peaceful with fish that are not too tiny but like any fish will eat those. Max size, 14" (one that size is several years old). A tad skittish and can drive peaceful but nervous fish nuts as they are always moving. This pic is by Reclos.
Columbian shark (Hexanematichthys seemanni) used to be Arius seemanni but got reclassified, gets to around 14", reported up to 24" in wild but that is unconfirmed. Eats mainly smaller fish. requires hard water and needs very brackish to full salt as an adult. the pic is by Johnny Jensen
Iridescent shark (Pangasius hypopthalmus) also called sutchi catfish, occasionally aggressive, adaptable, gets to over 4' long and almost 100 pounds, this is another pic by helias