nano reef stocking: how many fish for a 49-gallon tank
Posted: Thu May 29, 2025 9:44 am
We've had our 49-gallon tank up and running for about six months now, with over a month of cycling and pod growth before adding any livestock. After a month, we introduced a cleanup crew consisting mainly of snails. Two months in, we seeded our 2-gallon fuge and tank with amphipods, large copepods, and Tisbe pods. A few weeks later, we added three coflake frags and a pair of black Ocellaris clowns. Since then, we've added 15 more frags and three more fish, but only a few frags and one fish every month or so.
My LFS told me I could keep up to a dozen fish in our tank size, as long as we went slow and gave our 60 pounds of live rock and the coflakes time to buffer the added nutrients. I'm considering adding a royal gramma, red-headed goby, clown goby, and possibly another peaceful fish that'll swim freely like the clowns. This would bring our total to nine fish. I'm not sure if that's too many, though.
I've seen nice 29-gallon cubes with up to seven fish, and the nine I want are within the inches-per-gallon rule. However, I'm still concerned it might cause problems. With just the five fish we have now, the tank still looks a bit bare. Our current stock list is as follows:
Fish:
- Pair of Black Ocellaris Clowns
- Tail Spot Blenny
- Manderin Dragonet
- Green Banded Goby
Inverts:
- Skunk Cleaner Shrimp
- 2 Peppermint Shrimp
- 8 small blueleg hermits
- 1 orange Spiny Star
- 15 nassarius snails
- 14 nerite snails
- 3 turbo snails
- 1 trochus snail
- 2 feather dusters (we want to add three more)
Coflakes:
- hystrix birdsnest
- pink stylo
- green stylo
- monty undata
- red capricornis
- purple capricornis
- sea rod
- purple tree leather
- yellow tree leather
- frogspawn
- alien candy
- star polyp
- acan lord
- lobo brain
- zoas
- acan brain
- mushroom leather
- purple bushy photosynthetic gorgonkento4
We plan to add 10 more frags over the next year, including a chalice, more zoas, a rainbow monty, a plate coflake, staghorn, green capricornis, branching duncan, blastomussa, rainbow acan lord, and a yellow finger gorgonkento4 NPS.
Here are some pics of the tank for reference:
My LFS told me I could keep up to a dozen fish in our tank size, as long as we went slow and gave our 60 pounds of live rock and the coflakes time to buffer the added nutrients. I'm considering adding a royal gramma, red-headed goby, clown goby, and possibly another peaceful fish that'll swim freely like the clowns. This would bring our total to nine fish. I'm not sure if that's too many, though.
I've seen nice 29-gallon cubes with up to seven fish, and the nine I want are within the inches-per-gallon rule. However, I'm still concerned it might cause problems. With just the five fish we have now, the tank still looks a bit bare. Our current stock list is as follows:
Fish:
- Pair of Black Ocellaris Clowns
- Tail Spot Blenny
- Manderin Dragonet
- Green Banded Goby
Inverts:
- Skunk Cleaner Shrimp
- 2 Peppermint Shrimp
- 8 small blueleg hermits
- 1 orange Spiny Star
- 15 nassarius snails
- 14 nerite snails
- 3 turbo snails
- 1 trochus snail
- 2 feather dusters (we want to add three more)
Coflakes:
- hystrix birdsnest
- pink stylo
- green stylo
- monty undata
- red capricornis
- purple capricornis
- sea rod
- purple tree leather
- yellow tree leather
- frogspawn
- alien candy
- star polyp
- acan lord
- lobo brain
- zoas
- acan brain
- mushroom leather
- purple bushy photosynthetic gorgonkento4
We plan to add 10 more frags over the next year, including a chalice, more zoas, a rainbow monty, a plate coflake, staghorn, green capricornis, branching duncan, blastomussa, rainbow acan lord, and a yellow finger gorgonkento4 NPS.
Here are some pics of the tank for reference: