Senegal/Cuviers Birchir is the same thing...
The plecs look like a larger gibbiceps and a smaller common plec (I am unsure on these L numbers without looking them up lol)
The blue cichlid darting about is a Malawi cichlid and doesn't belong in that kind of community at all...
The Tinfoil barb doesn't look right, either it is just really over weight or it is becoming very stunted and needs a bigger tank already...
The dark brown cichlid does look like a juvenile chocolate cichlid but it is much darker in colouring already than they normally are so hard to tell.
The other odd looking cichlid looks like a Convict x Firemouth Cichlid Hybrid.
Lovely looking tank! Personally, I would advise rehoming one of the plecs as the tank just isn't big enough for two plecs that size, let alone two that have a lot more growing to do!
I would also consider swapping out the Tinfoil Barb as well, it really looks like it is stealing all the food and getting horribly fat which wont do it any favours but it means the Fire Eel is looking a bit on the skinny side and really very hungry, likely because the tinfoil ate its food!
A fire eel that side really needs to be eating good sized prawns, cockle, muscle and other chunky foods like that, bloodworm just wont cut it at that size and he will only snuffle up a little dried food if any at all, not enough for him to survive on for long.
Would also advise moving on the Malawi cichlid to a more suitable home with other malawis and consider other cichlids that would fit in with the large boisterous community. I personally love the gold or red spotted severums and you could always find your gourami a couple of lady friends as well
/www.youtube.com/watch?v=QsLnjP8WcOo
