I have had him for almost 1.5 years, he is eating algae sheets and seaweed extreme pellets but stopped eating meaty foods like mysid shrimp. Most of the time he swims around normally but he also jolts around the tank and flashes his fins randomly. All other fish are fine, tank is 225gallon with 48 gal sump. Temp is at 79.5-80 ph 8-8.2 ammonia 0 nitrite 0 nitrate 35 phos .15-.2 salinity 1.026. Has anyone experienced this with naso?