Stocking Ideas For My 75 Gallon

[JEC96]

I just recently inherited a 75 gallon tank from my brother, and I am looking to fill out the tank (if there is space for more). Current stocking is as follows:

5 tiger barbs
4 rosy barbs (2 male, 2 female)
2 red eye tetras
3 dubaui cats (at least that's what the fish store said. I have had little luck finding out anything about them)
1 panda cory
1 pleco
2 key hole cichlids (I know you shouldn't mix, but they are really timid, and only come out to feed)
1 pink kissing gourami
1 red tailed black shark

most everything is 1 1/2 inches or less, except for the pleco (5") and the rtbs (3")

Temp is 78 F, pH runs around 7.2

Any thoughts on what I could add to the tank to fill it out a bit? I'd like something as a showcase type fish, but not sure what. I'm not fond of angels.

Thanks in advance for your advice!

 

[blue acara]

Id add 5 more corys and 4-6 more red eye tetras, as they like to like in groups.

I really like the Red-Lined Torpedo Barb 6 of these would look very nice, they are very impressive when grown. You could be overstocked with all these fish though.

http/www.aquahobby.com/gallery/e_Puntius_denisonii.php