The stocking rule is about 1 inch of fish per gallon of water after the substrate and ornaments are factored in. Another factor is the orientation of the tank (vertical or horizontal design) due to the surface area of the water. A 10 gallon tank is really only good for a quarantine tank or a single specimen tank.
I only ever add 3 fish max at a time (46 gallon bow front) and use a quarantine tank filled with water from the main tank to observe before adding them to the main tank. It's easier to dump a quarantine tank than to start cycling the main tank all over.
Hey Don, your convicts been breeding already! That's cool
