Bottom Feeder for 9,500-Gal Pond: High-Finned Banded Shark

24×40 ft pond, avg 16–18" deep, 9,500 gal, biofilter. Wants bottom feeder to clean bottom, not eat goldfish, cold-hardy, affordable.

Only Viable Option: High-Finned Banded Shark (Myxocyprinus asiaticus)

• Not a shark—Chinese sucker fish.
• Only cold-hardy bottom feeder that overwinters.
• Get in pairs (social).
• $45+ for >4". Avoid tiny ones (sensitive).
• Peaceful, won't eat goldfish.

No other bottom feeders survive cold winters. Plecos, corys, loaches die.