Predaceous Diving Beetle Care?

[moonsetter]

So I recently found this gorgeous beetle[pictured above] and I believe she is a predaceous diving beetle[I may be wrong, please correct me if I am] and I have decided to keep her but I know little to nothing about how to care for her.

I have read that they will eat small fish, but is there anything else I can provide her food-wise? I have never kept feeder OR pet fish, and on top of my inexperience I would really prefer to feed her something that won't feel pain or suffer. If the fish are the only way to go, then I will get them because her dietary needs come before my opinions and feelings, but an alternative that will be just as good for her would be much appreciated.

Also does her habitat require both land and water? The beetles I've seen in videos are just housed in big jars or tubs of water but I have read they like to migrate from one water source to another, and I actually only found her because she was doing just that.
I don't want to deny her anything she'd have in her natural life, but I also don't want to waste space in her habitat by putting dry land if she's just going to spend all her time in the water and would prefer more room to swim as opposed to dry land to walk on.

I apologize for so many questions and the wall of text, I just want to know how to keep her happy and well cared for. I wouldn't have even taken her away from her natural habitat if I hadn't known the area was heavily sprayed with pesticide, and as it is she may have already gotten in some and might not make it. I really hope she is okay, and I want to give her the best captive life possible. Thank you in advance for any help and information <3

 

[mantisfan101]

Predaceous and keep them in large tubs or tanks of water. Also give her an area where she can crawl on to lnd and some fake or real aquatic plants to hold onto. They also need feeder insects as food and give them a filter wince they’re basically like little oscar cichlids and they make a mess when they eat so you don’t want the water to foul up. Also make sure that the enclosure is escape proof because they are really good eacape artists.

 

[Fishkeeper]

She can eat insects, which most likely don't feel pain. Any live insect will work, and you may be able to get her to take dead food from tweezers if you wiggle in front of her. I'd get some crickets at a pet store, some long tweezers, and some frozen dead krill. If you can get her used to taking live food from tweezers, it should be easy to get her to take the dead stuff.
You don't need too much space, though they are messy, so a 10 gallon tank is probably a good plan to help keep the water from getting too bad between water changes. Remove any food she doesn't eat as soon as possible. And yes, you'll want a lid. A sponge filter may be a good idea, but isn't necessary if you do frequent water changes and remove food once she's done with it.
I'd give her something she can climb out on, but it doesn't need to be big. Even just a fake plant or a branch sticking out of the water is fine. Diving beetles generally only move between water sources when they need to, they really aren't graceful on land.

 

[moonsetter]

Update: I've got her in a temporary tank, just about to run to the pet store and pick up some of the stuff I'll need to put her permanent home together. I've got small crickets for my scorp so I can try one of those once she gets settled, and the rest I'll pick up along with the plants and other food. She seems happy to dive again and was considering this dead mealworm so I'll try the tweezer trick next. Everything seems to be looking up for her! Thanks for the advice, I will try to update again once everything's put together and I've got her eating.

EDIT: I put in three little worms, pulled out two and one-fourth. She’s eaten already, I guess.

 

[Alice is Late For Tea]

Update: I've got her in a temporary tank, just about to run to the pet store and pick up some of the stuff I'll need to put her permanent home together. I've got small crickets for my scorp so I can try one of those once she gets settled, and the rest I'll pick up along with the plants and other food. She seems happy to dive again and was considering this dead mealworm so I'll try the tweezer trick next. Everything seems to be looking up for her! Thanks for the advice, I will try to update again once everything's put together and I've got her eating.

EDIT: I put in three little worms, pulled out two and one-fourth. She’s eaten already, I guess.

Awww do you till have her?