^^^ woah bad stocking
1. male and female bettas should only be kept together when breeding and even then its only for a sort time but the female sometimes is still killed.
2. males and guppies shouldn't be kept together, the male will mistake them for another male betta therefore kill them.
3. tiger barbs shouldn't be kept with slow long finned fish which the betta is and for safety and to keep aggression down should be kept in groups of at least 8.
4. if the albino pleco is one of
THESE then it will grow to atleast 18" and will need a tank size of at least 5ftx2ftx2ft.
5. clown loaches also grow big, has been known to get as large as 16" but 12" is more common and for them to feel safe they need to be in groups of at least 5.
6. hoping the platies are either all same sex or 1 male 4 female, you should have at least 2/3 females to each male to avoid stress.
Over all with male bettas most have found, cories, loaches and plecos to be most successful tankmates, sometimes shrimp although some prefer to eat them