Consider how much water you actually have since the bowl itself in 1 gallon, subtract the rock and sand volume. I'd say you're working with around 0.75 of a gallon. This will have quite large temperature changes between day and night and would kill off any CRS you get. I suggest starting with RCS in such a small tank since they are much hardier.
Oops! I meant RCS! I was reading another thread. lol
Just my animals:
0.2 Cornsnakes, 0.2 Bearded Dragons, 1.0 Water Dragon, 0.2.1 Crested Geckos, 1.0 Tiger Salamander, 2.0 Anoles, 0.0.2 Red Eared Slider Turtles, 0.0.1 Map Turtle, 0.0.1 Hermit Crabs, 1.0 Hamster, 1.0 Rabbit, 0.1 Horses, 2.2 Dogs, 0.2 Cats, Chickens, Ducks, Oscar Tank, Planted Bowl, 2x 10 Gallon, 2x 0.5 Gallon, 5 Gallon, and Planted 25 Gallon Tank....Is that it?