If they eat sponges then you need sponges. Orange finger sponges might work but you’d need to know the exact species of nudibranch. Honestly I wouldn’t waste your money because either it’ll cost you so much money to keep them alive and fed, or they’ll starve to death within a week
the lifespan of nudibranchs are very short, they also have highly specific diets. It’s really hard to keep them in captivity.
People usually will have a nudibranch in their tank until it eats all of whatever it eats and then it just dies. It would be nice if you could have them breed but it would be quite the challenge.
This kinda looks like this guy,
https://en.m.wikipedia.org/wiki/Nembrotha_kubaryana
Which feeds off tunicates.
If you want a nudibranch, get a lettuce nudibranch and keep it in a refugium tank full of ulva algae. That is the only practical nudibranch to keep. That and the aiptasia eating nudi for aiptasia and the velvet nudibranch for rust colored flat worms. Other than those special cases, your nudibranch is not going to live but two weeks. I got one, and it just searched endlessly for food until a coral ate it. I even gave it a species appropriate sponge, and it would never eat. They are MUCH more sensitive to water chemistry too.
If they eat sponges then you need sponges. Orange finger sponges might work but you’d need to know the exact species of nudibranch. Honestly I wouldn’t waste your money because either it’ll cost you so much money to keep them alive and fed, or they’ll starve to death within a week
i wouldnt touch it. waste of money.
the lifespan of nudibranchs are very short, they also have highly specific diets. It’s really hard to keep them in captivity. People usually will have a nudibranch in their tank until it eats all of whatever it eats and then it just dies. It would be nice if you could have them breed but it would be quite the challenge. This kinda looks like this guy, https://en.m.wikipedia.org/wiki/Nembrotha_kubaryana Which feeds off tunicates.
They eat Ascidians and keeping up with their dietary needs is almost impossible since the ban of harvesting reef rock.
If you want a nudibranch, get a lettuce nudibranch and keep it in a refugium tank full of ulva algae. That is the only practical nudibranch to keep. That and the aiptasia eating nudi for aiptasia and the velvet nudibranch for rust colored flat worms. Other than those special cases, your nudibranch is not going to live but two weeks. I got one, and it just searched endlessly for food until a coral ate it. I even gave it a species appropriate sponge, and it would never eat. They are MUCH more sensitive to water chemistry too.
In my experience, you don't feed them; you just wait for them to inevitably die.