Oblique-lined dottybacks are generally hardy fish that can be kept in a reef or fish-only aquarium, but they do require some specific care. They are semi-aggressive and need plenty of hiding places in their tank, like rockwork with caves and crevices. They should also be housed with larger, non-easily-harassed fish. 
Water Conditions:
Temperature: 72-81°F (22-27°C).
pH: 7.7 to 8.5.
Specific Gravity: 1.020 to 1.026.
Ammonia and Nitrite: 0 ppm.
Nitrate: Below 20 ppm.
Filtration: High-quality filtration is essential, including a protein skimmer to maintain water quality. 
Tank Size and Environment:
Minimum Tank Size: 30 gallons or larger. 
Hiding Places: Provide ample rockwork with caves and crevices for the dottyback to hide and feel secure. 
Tank Cover: Due to their jumping habit, ensure the aquarium has a lid. 
Diet:
Carnivorous: Dottybacks are carnivores and should be fed a diet of meaty foods, such as vitamin-enriched brine and mysis shrimp, chopped fish, and a quality flake food. 
Feeding Frequency: They should be fed multiple times daily. 
Tank Mates:
Semi-aggressive:
Dottybacks can be semi-aggressive towards other fish, so it's best to keep them with larger, non-easily-harassed species. 
Invertebrates:
Dottybacks will not bother most invertebrates, so they can be kept with cleaner shrimp, hermit crabs, snails, and urchins. 
Ideal Tank Mates:
Consider clowns, damselfish, wrasse, tangs, dwarf angelfish, and butterflyfish.