Scorpion fish-
A fish of this size and predatory nature must be kept in a large aquarium. An adult fish requires a tank of 75 gallons or more in order to thrive. Several specimens may be kept together provided they are housed in a roomy aquarium with plenty of territorial space per fish. Keep the aquarium well lit.
Goatfish-
Goatfish are easy to identify by the pair of long barbels on their chin. Two distinct and well seperated dorsal fins; the caudal (tail) fin is forked; anal fin directly below second dorsal fin and similar in size with an initial spine; base of pectoral and pelvic fins in line; scales large; snout long.The barbles of the Goatfish are equiped with chemosensors. These barbles are used to feel through the substrate in search of food.Goatfish are carniverous feeding on worms, crustaceans, brittle stars, urchins and molluscs.
Grows to 35cm or more.
Stone fish-
I dont think I have ever seen them sold. They are pretty dangerous. I saw one when I was at the Red Sea, but thats it. I dont think I would want one in an aquarium anyway cause they are kinda boring, they just sit there.