one of my black skirt tetras is wanting to lay on the gravel. he swims around a bit to go back and lay down. Rest of fish not doing it.
20 gallon high: 20-40 filter, heater, 1 ADF, 8 ghost shrimp, 9 neon tetras, 5-6 black skirt tetras, 1 snail. The betta and the rest are ok (but one likes to hide). Using prime.