Suggestions for nano reef addition

[RichWise73]

I am thinking about possibly adding one more fish to my 20-gallon cube. I currently have a helfrichi firefish, pink streaked wrasse, aiptasia eating filefish and two hi fin red banded shrimp gobies.

Are there any candidates that I could add that are predominantly yellow and safe in a mixed reef environment?

 

[Jay Hemdal Verified Community Expert]

Can you post a full-tank pic? That helps me a lot in gauging how much room the tank might have left. For example, a 20 gallon cube with one rock in it and small fish would have space for more fish. The same tank, filled with rock, would not.

Personally, I'd call that tank full, to allow for room for growth with the filefish and wrasse.

Tanks can reach capacity three ways: Biologically (too much biomass for the filter), territorial (the fish fight) or behaviorally (the fish just don't have room enough to swim) The last one is discussed here:

Estimating the Need for Swimming Space for Aquarium Fishes

This article explores required aquarium sizes for marine fishes

www.reef2reef.com

Jay

 

[vetteguy53081]

Banggai cardinal and tail spot blenny comes to mind but if fish have potential to reach additional size, I'd consider something ornamental like a shrimp or reef safe scavenger

 

[RichWise73]

Can you post a full-tank pic? That helps me a lot in gauging how much room the tank might have left. For example, a 20 gallon cube with one rock in it and small fish would have space for more fish. The same tank, filled with rock, would not.

Personally, I'd call that tank full, to allow for room for growth with the filefish and wrasse.

Tanks can reach capacity three ways: Biologically (too much biomass for the filter), territorial (the fish fight) or behaviorally (the fish just don't have room enough to swim) The last one is discussed here:

Estimating the Need for Swimming Space for Aquarium Fishes

This article explores required aquarium sizes for marine fishes

www.reef2reef.com

Jay

Thanks for the information Jay. I will take a picture of the tank when I get home this afternoon. The current setup is a little different than the last picture I have on my phone.

 

[RichWise73]

Banggai cardinal and tail spot blenny comes to mind but if fish have potential to reach additional size, I'd consider something ornamental like a shrimp or reef safe scavenger

Thanks for the reply. I was hoping to add one more mouth to feed to increase nutrient levels.

 

[RichWise73]

Can you post a full-tank pic? That helps me a lot in gauging how much room the tank might have left. For example, a 20 gallon cube with one rock in it and small fish would have space for more fish. The same tank, filled with rock, would not.

Personally, I'd call that tank full, to allow for room for growth with the filefish and wrasse.

Tanks can reach capacity three ways: Biologically (too much biomass for the filter), territorial (the fish fight) or behaviorally (the fish just don't have room enough to swim) The last one is discussed here:

Estimating the Need for Swimming Space for Aquarium Fishes

This article explores required aquarium sizes for marine fishes

www.reef2reef.com

Jay

Here is a current picture of the Cube 20.

 

[tinyfellows]

Random question but what light are you running?

 

[Kasrift]

Maybe a yellow damsel, they can have aggression issues like all damsels. Or yellow clown goby. Or a midas blenny. I think 20 is too small for a gold assessor.

If you want a partly yellow, starcki damsel which is more peaceful on the damsel front as well.

 

[RichWise73]

Random question but what light are you running?

Radion G6 XR15 Pro

 

[RichWise73]

Maybe a yellow damsel, they can have aggression issues like all damsels. Or yellow clown goby. Or a midas blenny. I think 20 is too small for a gold assessor.

If you want a partly yellow, starcki damsel which is more peaceful on the damsel front as well.

Trying to avoid any damsels. I was thinking of a gold assessor but saw a minimum suggested volume as low as 10 gallons and up to 30 gallons. Do you have any experience clown gobies? Just wondering how tricky they can be with sps.

 

[Kasrift]

Trying to avoid any damsels. I was thinking of a gold assessor but saw a minimum suggested volume as low as 10 gallons and up to 30 gallons. Do you have any experience clown gobies? Just wondering how tricky they can be with sps.

I don't. They are goofy looking. You could ask @steveschuerger how his gold assessor is doing. You have a good open aquascape so it could be ok.

 

[RichWise73]

I don't. They are goofy looking. You could ask @steveschuerger how his gold assessor is doing. You have a good open aquascape so it could be ok.

I was thinking it would hang underneath the arch most of the time. But there is swimming room on all sides of the rockscape.

 

[steveschuerger]

I was thinking it would hang underneath the arch most of the time. But there is swimming room on all sides of the rockscape.

My Assessor @Kasrift mentioned doesn’t hang out in any arches or rockwork . Seems to like open water, but then again nobody bothers it either, so maybe it doesn’t feel the need to hide. Tank is a little small though. Clown goby would be a good fit size and activity wise but they tend to use whatever’s available for a perch including coral.

 

[Jay Hemdal Verified Community Expert]

I think a yellow assessor would work.
Jay

 

[steveschuerger]

My Assessor @Kasrift mentioned doesn’t hang out in any arches or rockwork . Seems to like open water, but then again nobody bothers it either, so maybe it doesn’t feel the need to hide. Tank is a little small though. Clown goby would be a good fit size and activity wise but they tend to use whatever’s available for a perch including coral.

It is a pretty little thing.