dead platy

I used to have 9 platies (or platy) in a 70 litre tank with 2 Chinese Algae Eaters, sold as ‘Sucking catfish’. The two catfish and 4 of the platies were rehomed as there were too many males, leaving me with 3 females and 1 male. Soon after, I bought 6 (Golden) White Cloud Mountain Minnows as it...