10g tank, what to put in?

alright when i take out the bala shark
what other fish can i add?

i hav already in the tank are
3 black mollies, 2 red clawed crabs, 1 african dwarf frog

and can i put in a dwarf puffer?
 
I would recommended taking the red claw crabs back. They do best in brackish water (freshwater with marine salt added). Also i have found that red claw crabs need access to air. Basically an ornament that sticks out of the water.
Try gettin some shrimp, they are much better suited to your tank.
 
well i already have a nice big castle sticking out of the tank, plus other deco and some plants as well. the crabs constantly protect they're castle not only staying at the top but going inside it as well.

also i noticed that one of my black molies continues to go in n outside the castle while the other two stay outside 1 nips at the castle (sort of cleaning it i think) while the other circles around it. whats up with that?
 
No, you can't add a DP. It would probably shred the mollie's fins and/or be eaten by the crabs. Also, be careful with crabs & ADFs. You might wake up and find you have 3 mollies and 2 crabs left.

If I were you, I would take the crabs & 1 mollie back and get a school of 6 small tetras or a betta, or I would take the crabs back and get another mollie & another ADF. I've had a red clawed crab twice. The first was years ago when I was quite small, and I had a crazy overstocked tank. The red clawed crab helped bring the stock down. The second time I had 1, I was keeping it in a small container (not tiny, just not big enough) for the time being. I tried an amano in with him, and all you could see was a blur of shrimp and a flailing crab. I find red claws very agressive, and I wouldn't reccomend anyone keeping anything slower than a danio with them.

Also, whenever I see red claws, their are a few crab appendages lying around, maybe a shredded crab or 2, and 2-3 living crabs. Don't be surprised if you end up with 1 crab that killed and/or ate the other.
 
so i should replace the crabs with a ADF. but can i put some cherry shrimp in there, cause I'm going to the DNA store n some more stuff.
 
black mollies just had some babies, what should i do?

Nothing, they'll get eaten or they'll avoid this and grow. If you want to ensure their survival, you'd need to separate them.
 
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