Pump.fun has introduced a custom trading pair feature enabling new coin launches to be paired with tokens already issued on the platform. All purchases of new coins will route through the original token's liquidity pool, directing buy pressure and deeper liquidity to existing communities. Eligible pairing targets include tokens still on the bonding curve, those migrated to PumpSwap, and whitelisted assets. Tokens that have migrated to Raydium remain unavailable for pairing unless specifically whitelisted, with Fartcoin cited as an approved exception.