my cat is jus over 8inchs long
its in a 4 by 1foot tank
i feed it gold fishes and catfish pellets if i aint got ne goldfish

in my tank i keep it with a pl*co , a diskus.
i did have other fish bout they dead
jus about 5days ago i noticed now and again that it goes abit nutty.
like in a coughing frenzy it doesnt look nice

can it be the tank? or water??
many thanks
jon