I think there are some issues there, but I would like first to know the specific species. Common names can be confusing, and two of those mentioned are easier to ID.
The African Butterfly Fish, Pantodon buchholzi, is one I have kept for many years, and many years ago now. This species is best in a pair, male and female. You can read more in our profile, click the shaded name.
The bush fish presumably is Ctenopoma acutirostre, it too is in our profiles. This will need a larger space.
A caution on potentially-large fish: never acquire a fish that will outgrow the present tank, unless you have the larger tank now. Circumstances change. And someone who may say they will take the fish later, may not. And the fish suffers if not kept in suitable surroundings all its life.
And, welcome to Tropical Fish Keeping forum.