Pseudochromis olivaceus (Rüppell, 1835), Olive Dottyback
Pseudochromis olivaceus (Olive Dottyback) was always found in association with coral overhangs or large rubble pieces on hard bottom substrates, and would retreat under the rubble or overhang when approached. P. olivaceus is species of Pseudochromis native to Gulf of Aqaba, Indian Ocean: Red Sea, we report for the first time from Persian Gulf (Kish Island, Iran). Relatively large specimens of P. olivaceus that inhabit these corals were observed preying on settlers of Dascyllus spp. Maximum length is 8 cm in Persian Gulf. They are reef dwellers being found at depths of from 4 to 8 m and in association with Acropora corals. Pseudochromis olivaceus, lives predominantly in large corals. Consequently, we suggest that the relationship between fish presence and coral size differs between the habitats due to coral size dependent predation on recruits and variability in the importance of direct recruitment to replenish fish populations. Juvenile P. olivaceus were seen attacking and chasing heterospecifics too large for them to consume. P. olivaceus has a limited home range and can be seen within a single coral 96% of the time.
| Main Authors: | , |
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| Format: | Images/Video biblioteca |
| Language: | English |
| Published: |
Iranian Fisheries Science Research Institute
2016
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| Subjects: | ASFA_2015::I::Ichthyology, ASFA_2015::I::Identification, ASFA_2015::F::Fish location, ASFA_2015::D::Distribution, Fisheries biology, |
| Online Access: | http://hdl.handle.net/1834/9352 |
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| Summary: | Pseudochromis olivaceus (Olive Dottyback) was always found in association with coral overhangs or large rubble pieces on hard bottom substrates, and would retreat under the rubble or overhang when approached. P. olivaceus is species of Pseudochromis native to Gulf of Aqaba, Indian Ocean: Red Sea, we report for the first time from Persian Gulf (Kish Island, Iran). Relatively large specimens of P. olivaceus that inhabit these corals were observed preying on settlers of Dascyllus spp. Maximum length is 8 cm in Persian Gulf. They are reef dwellers being found at depths of from 4 to 8 m and in association with Acropora corals.
Pseudochromis olivaceus, lives predominantly in large corals. Consequently, we suggest that the relationship between fish presence and coral size differs between the habitats due to coral size dependent predation on recruits and variability in the importance of direct recruitment to replenish fish populations. Juvenile P. olivaceus were seen attacking and chasing heterospecifics too large for them to consume. P. olivaceus has a limited home range and can be seen within a single coral 96% of the time. |
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