Does this sound like a good tank?

Question

I have a approx 20 gallon tank:

1 molly

1x male 1x female swordtails

1x male guppy 2x females

1x red tailed black shark

If you no any other good fish for my tank please tell me im thinking maybe about neon tetras is this a good chioce....

Answer 1

These fish need to school. Skip the molly unless you can get 5 or more. Skip the shark too. Keep the swordtails , but increase the quantity to two males and 4-5 females. Likewise for the guppies. Forget the neons. This will stock your tank to it's maximum. Or get a larger tank. Keep about 1 rounded tablespoon per 5 gallons of aquarium salt in there (not table salt) especially if you plan on keeping mollies.

Answer 2

With the swordtails you are going to need at least 3 females per male. The male will stress out just one female.
Neon Tetra's are great fish. They do very well in a group of 5 or more. Also corydoras are a great fish to add. They clean up the extra food on the bottom of the tank. You could even add female Betta's if you wanted to. They do well also with 5 or more in a group. Just make sure the Betta's are females and not males:)
You might want to consider getting another Molly also.

Answer 3

Sounds good to me you've got alot of the same fish I do.I have a small school of neon tetras as well and they are very colorful.You know they do better in groups of 5 or 6 at the least.And how about adding a pleco or maybe a cory cat?

Answer 4

That looks fine to me, I'm not a big fan of mollies as i believe they're more hassle than they're worth however, the shark will be fine, it tends to be more aggressive towards fish of it's genre or in extreme cases red fish, it hardly ever ends it injury. As someone suggested with most live bearers its best to keep more than one female with a male as they will pester the female incessantly. The only downside to what your planning is the fact that when you have fry you'll want to save them and that will lead to overcrowding. Someone suggested an Angel that would solve your problem but they grow to large in depth for the tank you have, so maybe later on you could get a small pair of cichlids, something around the size of Krebensis maybe.

AJ

Answer 5

The Shark will attack the Molly and Guppies, so you will either lose those fish, or have to give back the shark. Mine killed my Molly in less than one day. Don't get any Clown Loaches, they grow to be a foot long and you need to keep 5 of them to keep them happy. If you put a fish that gets a foot long in a tank that is too small for them, you are just killing them!

Nosoop4u

Answer 6

This is a very nice amount of fish. You've underloaded your tank, which is perfect as most people overload. This will give them plenty of room to grow. I wouldn't add anything else. With one male and two female guppies, though, you are looking forward to tons and tons of little guppy fry someday! Also, while the molly will do fine in the freshwater, their perfect tank would be brackish water with a huge growth of algae in the tank. This is their perfect environment. Good luck!

Answer 7

I think your swordtails and certainly the shark will out grow the tank. Go for a shoal of neon tetras and a pair of black mollies, they breed well. A couple of clown loaches will keep the tank bottom clean and will get rid of any snails that get in off plants.

Answer 8

You can add another molly but dont put small fish such as neons tetras.

Answer 9

You might want to take out the red-tailed shark because they can grow to about 6 inches. I would add an angelfish or two.