I still can't believe you guys are actually telling him to get more fish. It's not just a matter of tank size. Even if he gets a 300g, this is not a good mix of fish:
2'' Redtail Giant Gourami, 3'' bala shark, 2 4'' S.A Lungfish, 1 6'' tinfoil barb, 1 5'' fire eel, 2 2'' pacus, 6'' ornate bichir, 1 3'' red oscar, 1 6'' clown knife
The bala and the tinfoil need to school, and at least a few of those fish are bound to be eaten or killed.
Alex, I suggest getting rid of the GG, the SAL, the tinfoil, the eel, and the pacus, the oscar, and the clown knife. That'll leave you with the ornate and the bala. Get a few more balas, some more polys, and maybe some other mid-sized fish. Maybe get some plants and more decor. Turn it into a nice community tank, not some growout. Just my suggestion.
2'' Redtail Giant Gourami, 3'' bala shark, 2 4'' S.A Lungfish, 1 6'' tinfoil barb, 1 5'' fire eel, 2 2'' pacus, 6'' ornate bichir, 1 3'' red oscar, 1 6'' clown knife
The bala and the tinfoil need to school, and at least a few of those fish are bound to be eaten or killed.
Alex, I suggest getting rid of the GG, the SAL, the tinfoil, the eel, and the pacus, the oscar, and the clown knife. That'll leave you with the ornate and the bala. Get a few more balas, some more polys, and maybe some other mid-sized fish. Maybe get some plants and more decor. Turn it into a nice community tank, not some growout. Just my suggestion.