白边天竺鱼

<em>Jaydia albomarginatus</em> is a small saltwater fish belonging to the family Apogonidae, the cardinalfishes — a large and diverse group of typically small, nocturnal reef-associated fishes. Members of this family are found predominantly in tropical and subtropical marine environments, often sheltering among coral, rocky rubble, crevices, or algal growth during the day and emerging at night to feed on zooplankton and small invertebrates. This species reaches a maximum recorded length of approximately 10.2 cm. Details of habitat and range for this species remain limited in the ichthyological literature. Cardinalfishes are increasingly popular in the marine aquarium hobby due to their generally peaceful temperament, manageable size, and the fascinating paternal mouthbrooding reproductive strategy displayed by many species in the family. <em>J. albomarginatus</em>, if maintained in captivity, would benefit from a reef or fish-only aquarium with ample hiding spaces among live rock or coral structures. Water quality should be maintained at full marine salinity with stable parameters, and feeding on small meaty items such as mysis shrimp, copepods, and quality prepared marine foods is appropriate. Temperature in the range of 24–28 °C is typical for tropical reef systems. Its conservation status is Not Evaluated, reflecting limited available population data.