New to the forum and asking for advice with new tank.

Hello y'all. I've been snooping around on a few of the fish forums for the past several weeks since i purchased my first fish tank in over 20 years. I got the tank cycled and last weekend started adding fish. Here is a list of what i have so far:

55g tank
Whisper 60 filter system (I have a Rena Filstar XP3 canister in the mail and will soon upgrade)
1 x 200w heater (am considering putting in 2 x 100w heaters instead)
Air pump with air stone and a couple sunken ships.
Some small fake plants.(larger ones on order)

Fish: Mostly African Cichlids
1 of each

Pseudotropheus Demasoni
Metriaclima Estherae
Copadochromis Borleyi
Labidochromis caeruleus
Metriaclima Crabro
Pimelodus Pictus
Melanochromis Johanni
Chromobotia macracanthus
Yasuhikotakia modesta
And one small pleco that "wont grow past 6 inches"

Before purchasing anything, i didn't think it mattered what fish went with what and that as long as they were freshwater, they would mix. Boy was I ever wrong. But I'm a long way from knowing much about the hobby. So we decided on getting cichlids as they are pretty hardy fish and nice to look at. The pleco and loaches and catfish were purchased to help keep the tank clean obviously. We've had everything but the loaches for about 6 days and today I purchased the clown loach and found that my wife had taken the kids to the lfs and purchased the blue redfin botia and the Pictus catfish.

What i'm wondering is, Did i make a mistake in my fish selection? Will I be ok with what i have or should i rethink the issue? I've been reading up on each of the fish since we purchased them(the guy at my lfs told me that all the african cichlids i purchased would do well together) and am discovering that what i have constitutes a fairly wide range of aggressiveness. Please guide me friends so that i may enjoy a successful and beautiful tank for years and years to come.

edit:
In case you are wondering how the fish/water are/is doing, let me tell you.
The fish seem to get along and there has not been any fighting that i've noticed. They all eat the flakes I feed them and the brine shrimp i occasionally feed them. I think they need more hiding places and i'm working on that. The all seem to mingle pretty well together. I am wondering, however if i should pick up a few more of each kind or a few more of just a few species so they can be more happy with more of their own kind. Please adviseThe water quality is good as the ammonia stays between 0.25 and 0 and the nitrites are at 0. The nitrates seem good as well (about 20).

Thanks for the responses folks. The Demasoni, red zebra, redfin haplochromis, kadango cichlid, electric blue johanni and electric yellow lab are all males. I don't know yet what the bumblebee, the pictus catfish or the loaches are. They are all still in their juvenile state so I don't know how to tell the bumblebee's sex as of yet. I also don't know how to tell on the loaches. The loaches and the pictus are the largest of the group the loaches being about 3" and the catfish being about 4.5".

They all seem to behave more or less like a friendly community. I haven't seen any fighting or fin nipping on the loaches or any of the cichlids. The loaches seem so far to keep to themselves at the bottom of the tank along with the damasoni and the johanni.

Here are a few photos of my fish excepting the loaches which are both hiding in the sunken ship together where i cannot see them.

This is the pleco. Please help me identify it.


Here is the johanni.


The damasoni likes to hide in the side of the ship close to the loaches.


Here's the bumblebee


The redfin


Here you can see the yellow lab with the johanni.


And Here you can see several of them together...red zebra making first appearance. You can also see the pictus cat hanging out under the root.


Most of the family gathering to see the camera.

thanks for the replies y'all. I'll try to get a better picture and ost it soon. The guy at my lfs was saying that it's a juvenile bushynose pleco.