Okay so I have been lost in a daize and can't solve this.

Currently i have had 4 fish go missing, well 2 died, and 2 disappeared.

I orginally started this tank in March. It is my first tank.

I started with two tiger barbs, two blood/convict parriots, Gevega, and a plex.

Slowly I added 2 green tiger barbs and 4 other tiger barbs.

I then removed the parriot's and gave them to a friend

I bought then a red tail shark

2 red glass rossy barbs

2 albino barb

2 green tiger barbs

not a couple weeks later one green barb and red glass is missing

Can't find in the tank and all.

AFter a week I started noticing two of my fish starting to get fat

I'm thinking hey there prego. I am pretty sure now I'm wrong

But after two weeks i just found then dead same time floating upside down.

They where alive when I went to work and then 12 hrs later dead.

Any clues ? Hints TIps???