Compatibility among the tank mates is very essential, if we place right kind of fish with almost similar behavior.
The following set of fish combinations can be placed together.
1 st Set: All kinds of gold fish except comet (Oranda, Shubunkin, Fantail, Redcap, Bristol, Lion head, Calico etc.) with tiger or albino white shark.
2 nd Set: Guppy, Molly, Swordtail, Platy, Widow tetra, Tiger barb (small), Chanda (glass fish), Zebra danio, medium size Rosy barbs, small Angels and few Loaches.
3 rd Set : Koi carps (Single, two, three, color Koi and Manila carp), Tiger shark, bug Angels, big Tiger barbs.
4 th Set : Sarpae tetra, Neon tetra, Diamond tetra, Red eye tetra, Tiger barbs, Rosy barbs, and Tinfoil barbs.
5 th Set: discuss of all types, Oscars and Angels.
6 th Set: Rainbow, Kissing, Golden, Blue Gourami etc can be placed with few cichlids.
Observing their nature, feeding behavior, aggressiveness many other compatibility combinations can also be made.