You are not fully stocked, but your current stocking needs changes as it is not very desirable in the long term.
a. Giant danio's are shoaling fish and do best in groups of 6+.
b. Platys are sociable fish and will suffer when isolated their own- find out the gender of your current platy and then find it a suitable amount of males or females depending on its gender (generally speaking, its best to either have an all-female group of platys, or have 1male per 2-3females).
c. Rosey barbs are shoaling fish and like the giant danio's, do best in groups of at least 6+ of their own kind.
d. Pictus are predatory fish and are capable of devouring small platys or barbs as they mature- you should avoid these fish if you want to have small fish in your tank;
http
/www.thetropicaltank.co.uk/Fishindx/pictus.htm
e. The gold gourami is a colour morph of the blue/opaline gourami and three spot gourami and thus is very similar in behaviour and requirements to these other two gourmi's. Males can become particularly agressive and territorial as they mature and both male and females can grow up to 6inches long- you should find out the gender of your gourami's as they could cause you a lot of trouble as they mature in the future.
f. Kribs shouldn't really be mixed with slow moving fish like gourami's or fancy fish like guppys as these fish can become victims of kribensis;
http/www.justbajan.com/pets/fish/species...ensis/index.htm
You need to decide right now on what you are going to keep and what you are going to get rid of as far as you stocking goes as if you keep all your current fish together as they are, you are bound to suffer a lot of problems with them. You also need to work a lot of the numbers of certain fish types, you have two shoaling types of fish which are in numbers far too low etc. You have space for more fish depending on your tanks dimensions, but i would strongly advise sorting out your current stocking before you add anything entirely new to the tank.
How long has the tank been set up?
.
.
