It's really not a good idea. The crab will start to tear/eat the betta's fins. It may become food for the crab.
My Betta has swelling under it's front fins below it's gills.
The betta fish will see the mirror and then will be curious about it, because the mirror reflects the betta fish and they might think that it is another fish, so the fish will act differently.
Many people have modified freshwater ecosystems by putting dams in front of rivers.
You can place a mirror in front of it and it will fight as though it was another betta. However if you keep the mirror in for too long your betta will get stressed out and die, so best not to do that.
Your new betta is nervous. Some fish, including the betta, are quite intelligent. The fish is simply scared at the moment. Give it a week or so to get used to its new environment and it will stop doing this. Our bettas were skittish when we first brought them home, but now they come to the sides of their tanks when we get near them. Our female betta, who is in a 20 gallon community tank in our bedroom, actually rubs against my hand when I am doing tank cleaning. Just be patient, and your bettas will adjust and will warm up to you.
Usually, fish turn on right before an approaching storm front.
The "ventrals" is simply another name for the fishes "ventral fins" These are the paired fins in front of the Vent (aka Anus).
The front tank can be either a 17 gallon or 19 gallon I believe the back tank can be either a 19 gallon or 18 gallon Depending on model Combined 36 gallons or 37 gallons
no actualy i have a betta fish and i got him a floating mirror. it makes him exersize his fins. P.S make sure it floats if it doesnt move or float away as he hits it then it will hurt him. hope this helps you a bit... morgan S
Not with many fish, although holding a mirror to a betta will cause it to flare its gills as it will think its reflection is competition
Lacewings are bugs that have ears at the base of their front wings. It is stated that the lacewings do live in NZ and that they like the freshwater lakes.
Front tanks could be : 18 gallon plastic 17 gallon steel 19 gallon steel - 2 tube port 19 gallon steel - 3 tube port ----------------------------------------- Rear tanks could be : 18 gallon steel 19 gallon plastic ( all figures are for U.S. gallon ) so combined , 35 gallons to 37 gallons depending on equipment