Inherited a mixed tank... Newbie questions

[E.Y.]

Hello all.  My name is Evan.

I inherited a tank from one of my patient's that passed and I'm concerned about the fish that are stocked in it.  The tank is a 60 gallon.  I cleaned it and set it up in my office.  It is a 60 gallon with a pool filter sand substrate, Texas holey rock aquascape, and I have two Penguin 350's.

The tank is stocked with a whitish-blue African with two white spots on it's anal fin, a all yellow African with two yellow spots on it's anal fin, a cuckoo catfish, standard pleco, and two blood red parrots.  The parrots have been with the tank for a couple months before I took possession, but I'm concerned about their timidness.  They hide behind the holey rock 24/7 and don't even come out to feed. 

I'm thinking about donating them and possibly the pleco to a local LFS, but I just wanted to get another opinion.  I would like to get some colorful Africans, but I'm worried about the current Africans I have in their now.  I don't know their sex and I don't want to add fish that will possibly bully them to the point of death.

Thanks for reading.

[Regalblue]

Pictures of the Africans?  We can ID them for you, if they aren't hybrids.

[Cat(fish)lady]

I'd be concerned with the size parrots can get and the aggression with them vs the other Africans you have, in the future.

[E.Y.]

Thank you.  I have pictures on my phone so I will upload them tonight when I am on my home computer.  Identification of the African's would definitely be helpful, though I'm worried they are just hybrids.

[E.Y.]

Here is the best pictures I could get of the Africans.  The yellow one was feeling shy.  I also included a picture of the tank if there is anything I need to change or other constructive criticism.

[E.Y.]

Sorry.  I figured out the multiple uploads now...

[Regalblue]

Looking like a couple of the zebras.  Cobalt/pearl & Red ,  Which would be Metriaclima callianos & estherae 

[E.Y.]

Thank you for the help with the identification.

[Regalblue]

Not a problem