Common names being what they are,the only 4-Line Catfish I'm
aware of is Pimelodus blochii. If that's it it about as big as it's going to get...and $25 dollars for an adult is a steal (Juvis at 2"-3" run fairly cheap,<$10).
The perfect gift...JMO. He doesn't like it you can buy it for me
Only fish Connor "plays nice" with.