Thank you both. The substrate is pool filter sand with some crushed coral mixed in to raise ph and to give it a nicer look.
Here is the stock list.
Amphilophus labiatus (F0) - (Rapps)
Black Belt (F1) - (Rapps)
Silver Dollars (4 so far) - pretty good size (lfs)
Vieja bifasciatus (F1) - (Rapps)
Archocentrus Centrachus (wild) - (Rapps)
Hypsophrys nicaraguensis - (LFS)
zonatum Male - (Davis)
amarillo F1 Male - (Davis)
citranellum Lago Nicaragua F1 Male - (Davis)
labiatus F1 - (Davis)
pearsi - (Davis)
trimac - (Davis)
hartweigi - (Davis)
Cryptoheros Cutteri (F0) - female (Rapps)
Cryptoheros Cutteri (F1) - 2 male, 2 female (Davis)