what should i add to my freshwater tropical fish tank?

right now i have 1 red tailed black shark, and 5 red serpae tetras

its a 30 gallon fish tank which used to have a bichir in it but he recently passed due to age after several years, ive been curious as to what i can add if any to the current set up i have now

just a note, i dont like corys theyre dreadfully boring lol

and i dont like plecos, i grow out a tank wall to wall with green algae and the damn thing doesnt eat any of it and 2 days later i find it all skinny and dieing so i went to the store and returned it because APPARENTLY my algae wasnt good enough for it.

ive been in the hobby for several years now and have had a vast assortment of freshwater fish most of which i gave away to friends who wanted to get into the hobby

im just looking for ideas just no corys or plecos (:

(i also have a 5 gallon with a male betta in it and was told he could go well with a ghost shrimp or 2 so i bought 2 of them and 1 of them hadnt even hit the sand of the tank yet and was already getting eaten so i saved the other and fed it to the red tail in the big tank. if he can have a companion id love an idea)
its a freshwater fish tank incase i didnt mention that? idk

and the fish currently in the tank are semi aggressive, i forgot to mention that so fish like fancy guppies with long tails or anything like that wont work

3 Responses to what should i add to my freshwater tropical fish tank?

  1. Why don’t you try livebearers (guppies, platies, swordtails, mollies)?

    You could easily get some fancy guppies at a LFS.
    They’re very amusing and fun to watch; plus their bright colors really stand out of the tank.
    I’m not sure about you, but I really favour small, colorful fish.

    Or you could several gourami. Either dwarf or just normal sized, they’re really great tankmates. In my past experiences, they’re very beautiful and peaceful.

    I hope my suggestions have helped. :)

    I sell saltwater fish

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  2. you could get an oscar, but hell eat evry one

    you could get a pihrana, but hell eat the sick fish

    you could get a fire eel

    you could get a school of tetras (neon)

    you could get hatchet fish or a school of rainbowfish or even an arrowana!

    stingray!

    I sell saltwater fish

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  3. Why not try some South Amercican dwarf cichlids like Bolivian Rams ? They are very nice , active and won’t bother any other fish. I think they would be perfect

    Past experience

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