Caves and fishes

[lovecatfish]

Hi guys again. I would just like to consult ya'll about my tank. Currently 15gallon 2foot by 1 foot by 1 foot. I have 6rummynose, 4Cory, 1 Bolivian ram and a young male Betta. I would like to have fish that hides in the numerous caves I provided for them. There are stacked up driftwood forming a cave, empty flower pots another, bent live plants forming another and a 'mini forest' of tall plants in one corner. I have a sand substrate. pH is 7.1 hardness is 50ppm. Thanks for your replies!

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