it's not unusual for a fish to play with his rocks.
totally upto you. i have gravel in my bettas tank.
i have had this happen lots of times whether your feeding them or not... it scares me every time... and it is with different betta fish so i think it is normal!
They sorta can it depends on what color they are and the decorations and gravel. My betta is pure blue and it blends in with the gravel since the gravel is blue and some of the ornaments are blue.
I have always had gravel at the base of my Betta breeding tanks. The male will collect the eggs before they reach the gravel provided the tank has at least 10 inches depth of water.
Yes, a betta fish can live in a jar if it is large enough. Gravel can be placed in the jar and it can be a good habitat for this species.
No. Charcoal bits will harm your betta fish. But you can use deactivated charcoal bits
my betta bowl has sea glass which is really dull glass so it wont cut itself
if it is floating to the top, it means that your betta is sick. if it swims to the top and stays there, it is a normal behaviour of a betta.
Simple. Betta fish are territorial. They see movement, and color as a threat. They will do this even to the females until maybe mating season.
ye sit is very normal mine does that too:)
Under normal circumstances the female Betta looks and is smaller than the male in both body and finage.
A normal length for a fully grown Betta male is around 2 inches excluding the tail fin.