Assessor Macneilli
Reef Compatible: Yes
Care Level: Moderate
Disposition: Semi-Agressive
Min. Tank Size: 30 gallons
Mature Size: 2.0 inches
FAQ
Is the Assessor Macneilli safe to keep with other reef fish?
Yes, it is reef compatible, but due to its semi-aggressive disposition, it should be housed with compatible, non-susceptible species.
What is the typical mature size of an Assessor Macneilli?
The mature size is approximately 2.0 inches.
What tank size is recommended for keeping this species?
A minimum tank size of 30 gallons is required.


Diana Buckland –
Added an Assessor Macneilli to my 30-gallon reef tank and it’s been active and healthy for several months. It doesn’t dominate the tank and coexists well with other peaceful fish. Easy to spot and maintain.
Ella Forsyth –
This small fish is active and adds visual interest. I noticed it occasionally nipping at smaller invertebrates, so I’ve increased the tank’s hiding spots. Overall, a good fit for a moderate care reef setup.
Brandon Fisher –
Perfect for a mid-sized tank. It’s not overly aggressive and blends well with corals and other fish. I appreciate the moderate care level and the fact it’s reef-safe.