The following types of fish are suitable for raising in naked tanks:

1. Goldfish: They are very tenacious and relatively simple to raise. They are also docile and have a long lifespan.

2. Koi: Their ornamental value is very high, their temperament is gentle, and they are very suitable for novices to raise.

3. Medaka: They are small ornamental fish with strong ability to adapt to the environment.

4. Luohan fish: Luohan fish is an ornamental fish cultivated through cross-breeding. Its head is swollen like a Luohan fish. Its feeding habits are relatively wide, and it can be fed with natural feed or artificial feed.

5. Arowana: It is very suitable to raise arowana in a naked tank. This kind of fish is relatively large and needs enough space to move.

6. Map fish: It has a big head and a relatively big mouth. It has red irregular stripes on its body and looks like a map.

7. Guppy: Guppy has a gentle temperament and can be kept with moderate small and medium-sized tropical fish. It is usually lively and active and has a strong reproductive ability.

8. Parrot fish: Parrot fish is an ornamental fish bred from the cross between manta ray and purple fire mouth. Its body is bright red, so it is also called blood parrot.

9. Tiger fish: Tiger fish likes to swim and fight. If kept in a grass tank, it may be prone to muddy water, so it is suitable for keeping in a naked tank.

10. Zebrafish: Zebrafish is a very common tropical ornamental fish. It is deeply loved by people because of its slender body and beautiful stripes on its body.