Which are bubblenest builders and are not free-spawners like Tetras and Cyprinids.
Still my all time favorites are Neon Tetras.
I raised a group of 50 or so a few years back from a spawning in a 5 gallon bucket I was using for holding fish and plants. The bucket they were kept in was half full of water Sprite and Java Fern, and I wouldn't have saved the babies if I hadn't first noticed the adults cavorting about in the roots of the Water Sprite. I put a little Betta bowl heater in the bucket to keep the temperature swings at night from getting too low, and put a black garbage bag over it for 6 days so they wouldn't get blasted by indirect sunlight.
Biggest non-intentional Tetra spawning I've ever experienced. Their babies are not the tender little marshmallows most books would have you believe. They took to immediately eating decapsulated Brine Shrimp and micro sized Golden Pearls, and grew like gangbusters in a 10 gallon grow out until I could get a 20 gallon set up for them.