Thanks everyone for the comments. Need to add some substrate and decor but been very busy work and lazy at the same time at home so havent got to do anything. Still debating on black or tan color sand.
Stock List in the 450g
1 x 15" Tigrinus
3 x 8" clown loach
3 x 18" p. endi
1 x 9" p. endi
2 x 8" altifrons
1 x 5" s. whiteheadi
1 x 10" platycephalus indicus (lizard fish) <-- to answer amehel0 question.
2 x 10" barbs
2 x 5" ST dats
5 x 10-11" ST dats
Had my armatus in there but did too much damage so it had to go into another tank.