Trio of Royal Gramma's

[Dakbur]

Any other fish that can be kept in a harem in a 15G?

 

[polleke]

Maybe some assessors?

 

[Breakthecycle2]

Many dwarf angels and all the pygmy angels.
Some large angels
Marine beta (you either need to be able to sex them or start with specimen that are no larger than 3 inch in total)
All Anthias
Many Damsels
Grammas (though it seems to me you may just get a pair and the rest is tolerated)
Mandarin fish may work as well as females tolerate each other and males don't attack females.

There are likely more.

Dwarfs and Pygmy's can be kept in harems?

 

[Tabasco]

I don't think there are many options... maybe mollies that are saltwater acclimated? There are some really pretty sailfin variations.

 

[ThRoewer]

Dwarfs and Pygmy's can be kept in harems?

Sure. I had a group of 4 C. argi and they did excellent.
All pygmy angels live in harem groups in the wild. The same goes for most dwarf angels, but some of them only live in pairs, like C. bicolor for example.

 

[Dakbur]

But i am asking in regards to a 15 Gallon Aquarium. The Dwarf angels would be too crowded in that size of a tank.

 

[ThRoewer]

With a 15 gallon tank you will be limited to very small fish - neon gobies and the like.
Grammas will only work short term and only if you get small juveniles.

 

[Dakbur]

I would think that Angels would be too crowded in a 15 Gallon. Would that not be too small for them?

 

[Dakbur]

Sorry double post

 

[fearyaks]

Assessors could work.. I did have a pair that bickered though which is odd because normally they're pretty mellow.

Apologies for assuming you were going to go through with the Grammas... I underestimated you.

Maybe get some of those cool little green/red gobies that ORA offers if you're looking to stock your 15 gallon long term?