We got unbelievably lucky back in the year 2010 and rescued a rare Lithodoras at 1.5'. It grew to 2' with us. Named Rocky. Very tame and as friendly as they get. Eats like there is no bottom to his stomach. 1st to come and last to leave. Unfortunately lost him on our move from NY to FL after about 1.5 years.
Some important learnings: NEVER house pacu with timid doradids. The appearance of pacu (and large alligator gars, who are indiscriminate biters and attackers) in the 4000 gal tropical pond drastically changed Rocky, as it would come out far rarer and sometimes bear damage on his fins and barbels (same goes for channel catfish and iridescent shark catfish and other timid fish versus the pacu and the gators).
Some important learnings: NEVER house pacu with timid doradids. The appearance of pacu (and large alligator gars, who are indiscriminate biters and attackers) in the 4000 gal tropical pond drastically changed Rocky, as it would come out far rarer and sometimes bear damage on his fins and barbels (same goes for channel catfish and iridescent shark catfish and other timid fish versus the pacu and the gators).