Cory Catfish tank mates include most community tank fish as long as they are non-aggressive and friendly in nature. Otocinclus Catfish, Tetras, Swordtails and of course other Corys can be a good fit.
community fish like tetras, guppies, swordtails, barbs (not with guppies!), rasborasyou can find compatibility charts available online with a bit of research
put a male and a female in the same tank
Sure you can -- but egg-layers & livebearers generally need different pH water (from each other) and if your angelfish thrives, your livebearers might not. And some swordtails nip fins -- so your angel might not like the pestering ... just sayin'
Platies are peaceful fish that can coexist with a variety of fish species. Good tank mates for platies include other peaceful community fish such as swordtails, mollies, guppies, tetras, and peaceful bottom dwellers like Corydoras catfish. It is important to consider the size of the tank and the compatibility of the fish in terms of water parameters and behavior before adding them to the tank with platies.
They are OK with most Livebearers, Barbs and Tetras.
Julii corydoras and neon tetras to even African cichlids.
swordtails , they get scared of things walking by so they need somewhere to hide
Yes. is the short answer, with minimal maitenance
your local fish store should have faces on their holding tanks, smiles mean the fish in that tank do well with others, frowns mean the fish in that tank don't do well with others
The tank is not big enough to house any more fish. The basic rule is "1 inch of fish needs a minimum of 1 gallon of water" Although your tank is NOMINALY 1.5 gallons, in fact it will only hold about 1 gallon max because it will never be filled to the brim when it has fish in. (In actual fact the tank is not really big enough to house any fish at all).
There is no way a UV sterilizer will cure your fish of velvet. IMO they are a waste of money and counterproductive because they do more harm than good in a fish tank by indiscriminately killing good bacteria as swell as bad. Velvet disease (Oodinium) is a skin disease and the fish will all have it in their slime coats. The UV Sterelizer will do nothing to fix anything that is on the fish it can only kill water born, UV sensitive, life that actually passes through it. Acriflavine is a good reliable treatment for Velvet disease but commercially available Ich (whitespot) cures should also do the job.