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      Mottled Rabbitfish
      Mottled Rabbitfish

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      Reef Keeper

      Registered: July 2003
      Location: Sumner
      Posts: 7,855
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      Scientific Name: Siganus fuscescens
      Max. size: 40.0 cm TL (male/unsexed)
      Environment: reef-associated; oceanodromous brackish; marine ; depth range - 50 m
      Distribution: Western Pacific: southern Korea, southern Japan, ?Ogasawara Islands, Taiwan, southern China, Malaysia, Singapore, Thailand, Andaman Islands, Indonesia, Philippines, Yap, Palau, Pohnpei (Caroline Islands), Solomon Islands, Papua New Guinea, Vanuatu, New Caledonia, and Australia. Often misidentified as Siganus canaliculatus.
      Morphology: Dorsal spines (total): 13; Dorsal soft rays (total): 10; Anal spines: 7; Anal soft rays: 9; Vertebrae: 13. Body olive green or brown above, silvery below; fish frequently with a dark patch below origin of lateral line. Adults become mottled when frightened. Slender, pungent, venomous spines. Preopercular angle 89°-95°. Lower half to 2/3 of cheeks commonly covered with weak, scattered scales. Midline of thorax between pelvic ridges. Differs from S. argenteus in details of coloration and less deeply forked tail.
      Biology: Inhabits algal and seagrass flats and shallow lagoon and coastal reefs. Forms schools. Mainly diurnal. Juveniles feed on filamentous algae, adults feed on leafy algae and seagrasses
      Aquarium Care:There are not many members to this family, but the few of interest in the genus Siganus, previously Lo, are longtime aquarist favorites. They are easy to feed, none are aggressive to other inhabitants, and resistant to poor water quality. They have venomous dorsal and anal fins, similar to lionfish, and care must be taken in their handling. Even though omnivores, they are excellent herbivores and require a large amount of vegetable matter in their diet. In fact, they are one of the better hair alga consumers. They are found on the reef and also in grassbeds and mangrove areas. Every once and while rabbitfish shed their skin, similar to leather corals. Not safe with all types of corals such as Xenia. Their range is widespread in the central Pacific Ocean.
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      Keywords: Mottled Rabbitfish

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