Originally Posted by FuulieQ
Okay, sparkling gourami.... That sounds cool, I'll do some research. I would get a pair? Does the gender of the pair matter? And will they eventually outgrow the tank?
Similar upkeep to other anabantoids like bettas, right? And how should I go about testing my water?
We have fish (and plant) profiles here, second tab from the left in the blue bar across the top. When you see a fish or plant name shaded in posts, it means you can click on the name to see that profile. In each fish profile, it includes information on the numbers to have for that species, minimum tank size, suitable companions, maximum fish size when mature, and preferred water parameters. Have a look at the Sparkling Gourami, you will note it is best with a group; and yes, it is an anabantoid so that tells you a few things it will need, like floating plants.
Something that hasn't come up yet in this thread is water parameters. Some fish are adaptable, some have more specific needs. Livebearers for instance do not fare well in soft, acidic water, and require basic harder water. Some of the soft acidic water fish can adapt to basic water within limits, some cannot. Knowing your tap water parameters (hardness is more important than pH in this) may help you to decide where to be looking for suitable fish species. There are many that will suit a 10g if it is soft water, and several if it is hard water, and several can adapt to moderately hard.
You can find out about your tap water from your water supply people; some have websites with posted analysis of water, or they should be able to tell you the hardness and pH range. As for your aquarium, a liquid (as opposed to strip) test kit is a good investment. API make a "master" kit containing tests for pH, ammonia, nitrite and nitrate; these are the basics and all you really need. Find out about your tap water first, as it is far simpler to select fish suited to your available water than it is to alter the water.