Stocking problems

[Alepop1211]

So in a 90g I have:
1 threadfin geophagus
1 silver dollar (rescue from a friend)
1 7 inch pleco
1 small iridescent shark (will be removed soon)

I want to add
3 congo tetras
1 roseline shark
And 1 red severum or 4 small corydoras will the pleco kill the cories?

 

[SaraB]

What species of pleco is it? The shark might be more of a threat to the corydoras depending on how big it gets and how well they can hide.

 

[Alepop1211]

What species of pleco is it? The shark might be more of a threat to the corydoras depending on how big it gets and how well they can hide.

The shark is more peaceful than the common pleco in my mind from what I have seen. The pleco bosses the shark. He hasn't killed anyone but seems fairly aggressive. He was less aggressive when I used to have more fish...maybe I need to feed more..he gets pellets with everyone else normally and he actually gets a majority and he gets 2 algae wafers every other night or so...what do you think 4 small catfish or 1 red severum.