Though the fishes prefer to spawn among fine leaved plants, one problem that the aquarist faces in this regard is that the majority of fine leaved plants available in the aquarium prefer high light levels ("Cabomba" is a particular case in point) while the rummy-nose tetra prefers to spawn under subdued lighting conditions. Workarounds for this include the use of Java moss (a plant that thrives even in very low light levels, and is an ideal spawning medium for many fishes) or the use of synthetic alternatives ("spawning mops" made of nylon are typically deployed where a suitable natural plant is unavailable).