Suitable breeding colonies for my 6x2x2'

[bilbok]

Hi all,

I have a 6x2x2' tank with sump filtration that currently houses:

1x Tropheus moorii moliro 8cm (male)

1x Protomelus taeniolatus 10cm (male)

1x Cyphotilapia frontosa Kigoma 12cm (female)

1x Psuedotropheus greisheiki 12cm (male)

1x Glyptoperichthys gibbiceps 8cm

1x Synodontis multipunctatus 7cm

I would like to add some more fish and hopefully get them to breed. I don't care if the fry don't survive but I like the thought of some interesting behaviour. The tank is half full of rocks which create plenty of caves and crevaces. I dont expect to be able to keep them all. The fish I'm thinking of are as follows:

5x Julidochromis marlieri

5x Altolamprologus compressiceps

5x Altolamprologus calvus

1x Cyrtocara moorii

1x Otopharynx lithobates

1x Nimbochromis venustus

5x Lamprologus ocellatus

5x Labidochromis caeruleus

1x Protomelas sp. 'Steveni Taiwan'

5x Neolamprologus brichardi

Any comments are much appreciated.

Thanks,

bilbok.