Thanks for the advice... but don't panic... Rest assured, he seems happy, has been up til now, quite docile... and I'm taking great care of him... I've had him about 5 days now... he shares the 5.5 gallon tank with a Fathead Minnow and a Female Betta. I am new to all this... even the Betta... it's my first one... and the aquarium... I just set it up about 7 weeks ago. Believe me, I'm not about to jeapardize the health and well being of my Betta sweetheart.
The Cray seemed very content right from the beginning. I gave him a piece of shrimp and he dragged it into the cave-like lower level of a Balinese Lantern... and ate some of it. Since then he's also had some peas and I suspect he's even eating some of the betta pellets that sink to the bottom.
He's very active... and is very entertaining. In fact, the Betta often just hangs around watching him... and my cat, Kiwi, sits by the tank watching all. it's funny! This morning the Cray and the Betta were sharing the same cave! One on the left, the other on the right.
The Cray doesn't seem interested in the fish. Maybe in the wild, he never had the chance to eat a fish... or he just never considered them to be food... I don't know...
He (or she... I'm just using "He" for convenience... I could use "It", but I felt that was a bit rude and impersonal)... He... seems to have made a "home" of sorts in the bottom of the lantern... this afternoon, he semi-walled in the lower level of cave... (see pic). Maybe He is a She and she's building a nest... more research needed. But he also likes to crawl in, on, around, and through the whole of it. From the inside, he can crawl from the bottom to the upper level and into the crown. In my opinion, It's a great structure to have in any tank... it's very versatile.
It was my intention to let him go after about a day, and after showing him to my sweetheart. But, He looks Happy! It seems to me he'd have a better chance of survival, and maybe a longer life span in my aquarium. He gets along great with the other fish.... and I've read on other websites and forums about how Crays can be very agressive... killing fish and such... but he's so docile and friendly...
I've had many wild creatures, orphans, injured... etc... and so forth, over the years... and I haven't made any pets out of them. It's a toss up. I could set him free... and then set one free from a pet store, or ebay, or aquabid... but then I might end up with one of those cantankerous, crabby, crays, that I've read about.
I also Love my Betta and want to get another one... Ps. I used to think that only the Males were beautiful... but then I learned, after first seeing some at the pet store, that the Females can be just as beautiful... and so I'm thinking getting another Betta might crowd things up... I have some thinking to do.
Again... he seems pretty darn happy... gets great meals... I'm doing research and making sure he's getting everything he needs... including but not limited to... the proper water parameters... which seem to be compatible with the Betta. I will give careful thought to your opinions... and I sincerely appreciate your input and feedback.