Missing white clouds and really fat black skirts???

[ReneeMarie]

Good day all I have a question I hope someone can answer. I had 3 white clouds up until 3 days ago. Now all of a sudden only 1 remains??? They were all there, perfectly healthy, swimming, eating and then presto - 2 vanished without a trace. I've checked the water - nothing is indicating any decay so I can't see that they've died and are rotting somewhere in the tank. I did however notice that 2 of my long fin black skirts are looking particularly plump (way fat) as of a couple days ago??? Could they have eaten the white clouds??? I don't know whether I should get him some more schooling buddies or not as I wonder if they'll just get eaten eventually as well???

The tank info: 55 gallon with 4 silver dollars (about 4 inches), 3 long fin black skirts (2-3 inches), one plec (4-5 inches), 8 cardinal tetras and the 1 remaining white cloud. I feed twice a day (diet includes flake, spirulina, daphnia, brine shrimp) and do a 20% PWC and maintenance weekly.

Thank you for any advice

 

[rich311k]

You have nothing that would eat them. Is the top covered? They either took a dive or they passed on and the remains are some where in the tank or your filter.

 

[Argblarg]

I had a white cloud jumper the other day during a PWC. I never would have noticed except the cat freaked out and pounced. Luckily he had no idea what to do once he had the fish!