So here are some easy caves for small fish.
Plastic tiki party favor cups. 3 for $14 on amazon. I drilled a 1 1/2 inch hole on the flat side and oversprayed with krylon light moss green and black. The cups are textured to look like coconuts.
Put a rock or gravel in and you're done. Or you could push the bottom into sand and pile it up at the front. The hole is not necessarily for the fish to get swim through but to get them to use the cave. I discovered fish will not use caves completely enclosed. They like seeing an exit space but not being enclosed in dark.
Plastic tiki party favor cups. 3 for $14 on amazon. I drilled a 1 1/2 inch hole on the flat side and oversprayed with krylon light moss green and black. The cups are textured to look like coconuts.
Put a rock or gravel in and you're done. Or you could push the bottom into sand and pile it up at the front. The hole is not necessarily for the fish to get swim through but to get them to use the cave. I discovered fish will not use caves completely enclosed. They like seeing an exit space but not being enclosed in dark.