05-17-2011, 01:33 PM
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First, welcome to Tropical Fish Keeping forum.
Now, to your issue. You do have some problems with your present stocking, and these will intensify more and more. I'll try to explain, starting with general comments before suggesting options to answer your question.
Loaches are social fish and must be kept in groups. At least 5. They have a social structure within the group, they interact extensively, and when denied this they will be stressed. It may or may not "show" but it is there. I have had several loach species over the 20+ years, currently I have a group of dwarf loach and banded dwarf loach in my 29g, and a group of five Botia kubotai in my 90g stream tank, and I can assure you that the interaction between these fish is absolutely amazing. They "play" constantly during the day, to the point of tiring themselves out and flopping over on their sides by evening. Denying them this necessity is not wise. However, your 55g will not be sufficient space for 5 clown loach as they mature. You can read more in our profile, click on the shaded name to see that species' profile. [Profiles for your info are under the second tab from the left in the blue bar across the top of the page.] Kuhli loach also need a group, but they are fine in a 55g.
Beta are not good community fish, especially males. A male should have its own space, a 5g is fine, well planted.
Tetra are shoaling fish requiring groups; six is usually the minimum, but more is better if space permits. Black Skirt Tetra [in our profiles under Black Widow Tetra] can be nippy with long-fin and slow fish like angels and gourami. These should never be combined.
Angelfish and gourami should not be combined; both are territorial and need space. The angels in a 55g are OK, if the gourami are removed. These fish are in our profile under Pterophyllum scalare. A group of five is best, but as you have 3 i would be careful adding any more, as the profile will explain.
Bala Shark should not be combined with other substrate fish (loaches, catfish, other sharks). I ask that you read the profile, there are several issues here and I will not repeat all that is in the profile.
Gourami have issues depending upon species. They are territorial and can be quite aggressive for such a "sedate" fish, as you are seeing. The profiles of each species will explain numbers and tank sizes for their best health.
Many of these fish can live years, even decades, and the issues I've pointed out will determine if they do or don't. Even if things "appear" OK, under the surface they are not.
So, to your direct question. The honey gourami are fine together, and a 20g tank would suffice. The blue will be aggressive regardless of the tank size; males are sometimes "sort of" aggressive, sometimes extremely so, depending upon the fish. They are best where they are, except i would not leave angels with them. The 3 angels could go to the 36g, not something i would normally suggest, but i am thinking here of the best for your fish given the tanks you mention.
Obviously some of these fish need to go period, to much larger tanks and separately. Please have a read of the various profiles, and feel free to ask questions. We are all here to help, and many of us (sadly) have gone through similar experiences and learned from our errors.