6 months and a Seng will be about 7" if fed well..I believe the Del's are similar in their growth, the first few months they grow fast!
Snails are a good companion for Bichirs IMO, I have Japanese trap doors in all my tanks now, and all my glass is cleaned for me about once a month now. They don't multiply like rabbits either, live bearers, just make sure that if you have soft water, that shells or something of this type are added for shell strength.
Plecos are nice, but tend to have a taste for slime coat, Chinese algae eaters are freak shows (IMO), so snails are about all thats left...
Snails are a good companion for Bichirs IMO, I have Japanese trap doors in all my tanks now, and all my glass is cleaned for me about once a month now. They don't multiply like rabbits either, live bearers, just make sure that if you have soft water, that shells or something of this type are added for shell strength.
Plecos are nice, but tend to have a taste for slime coat, Chinese algae eaters are freak shows (IMO), so snails are about all thats left...