What is this plant and is it safe with my frogs?

[Fbt123]

I wanted to keep a culture of them but im not allowed to . In the picture i put of the mould stuff if you look in the bottom right corner you can see a white/brown blob which is a baby woodlouse . Its weird because at the stage its at now you can see the food that its eaten inside of it :P

[DigitalPunk]

You put Cat food or Fish Flakes in your Vivarium with your frog? No No No No No. Please don't do this. The mold on the cat food is not good. That is bacteria forming on the soggy decaying food.

Your Isopods in the Vivarium will have plenty to eat between frog poop, decaying leaf liter, and decaying plant life. Introducing man made items such as fish and cat food is not recommended. I would clean them out ASAP.

[Fbt123]

Ive just cleaned it out, on a leaf there was a tiny black bug that was running around on it. Any ideas as to what this is?

[DigitalPunk]

No, they probably hitched a ride on a plant or were attracted by the mold.

[Bombina Bob]

I put the fish flakes in the isopod culture, not the terrarium! they
have plenty to eat in there. I had assumed that you had a culture on hand.