Is there a size difference in a delhezi bichir and an ornate bichir? And do you have to add aquarium salt, because I've read an article saying not to forget to add aquarium salt.
Hi.
Yes big size difference.
Ornates can grow to twice the adult length of a Delhezi.
They also grow fast and can be quite nasty at times.
And no salt needed for Bichirs.