my betta bowl has sea glass which is really dull glass so it wont cut itself
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
gravel
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.
Feed your betta fish cooked & de-shelled peas for 2 days instead of his/her regular food
If you overfeed a betta they will start to slow down their swimming and lay on the bottom.
They should be provided with goldfish or pond food instead
well you first need at least a one gallon fish bowl and fish gravel and plants and stuff for them to hide in. fish food, and give them every once in a wile betta fish treats for fat.
It most likely means that he/she is sick because that is what happened to my betta fish. make sure you don't overfeed your betta fish because it can lead to constipation and that will cause trouble for the betta fish
Fish do not normally "float around" they swim. If your fish is floating/sinking then it is probably dead.
I am not certain but here is some information it will probably die but this will usually happen when your male betta fish is caring for the eggs because the betta is scared it might do an accident and eat one of its eggs instead of the betta foods that you give it
This can depend on what type of food you are feeding your fish. If you are feeding betta bites, then typically the fish would eat from the surface. If you are feeding flakes, then it's possible the fish is simply waiting for the food to sink. It's not uncommon for fish to forage around the bottom for food that may have settled there.