
Cephaloscyllium fasciatum
Cephaloscyllium fasciatum, commonly known as the reticulated swellshark, is a small benthic shark species endemic to the coastal waters of southeastern Australia. This distinctive shark is characterized by its ability to inflate its body when threatened and its reticulated pattern of dark bands and spots across a lighter background.
↓Decreasing
Population trend
5
Countries
Photo: (c) 邵廣昭, einige Rechte vorbehalten (CC BY-NC)
Taxonomy & Classification
Kingdom
ANIMALIA
Phylum
CHORDATA
Class
CHONDRICHTHYES
Order
CARCHARHINIFORMES
Family
SCYLIORHINIDAE
Genus
Cephaloscyllium
Cephaloscyllium fasciatum belongs to the family SCYLIORHINIDAE, order CARCHARHINIFORMES, within the CHONDRICHTHYES class.
Species Profile
Cephaloscyllium fasciatum, commonly known as the reticulated swellshark, is a small benthic shark species endemic to the coastal waters of southeastern Australia. This distinctive shark is characterized by its ability to inflate its body when threatened and its reticulated pattern of dark bands and spots across a lighter background. The species inhabits rocky reefs, kelp forests, and sandy bottoms in temperate waters, typically found at depths ranging from shallow intertidal zones to approximately 200 meters. Reticulated swellsharks are nocturnal predators that feed primarily on small fish, crustaceans, and cephalopods. Their reproductive strategy involves laying leathery egg cases that attach to rocky substrates or vegetation. The species faces significant conservation challenges due to its limited geographic range and specific habitat requirements. Primary threats include coastal development, pollution, fishing pressure, and habitat degradation from human activities. Climate change poses additional risks through ocean warming and acidification, which can affect prey availability and habitat quality. The species' slow reproductive rate and site fidelity make populations particularly vulnerable to local extinctions. Conservation efforts focus on marine protected area establishment, fishing regulation enforcement, and habitat restoration programs. Research initiatives aim to better understand population dynamics, reproductive ecology, and critical habitat requirements to inform targeted conservation strategies for this critically endangered shark species.
The reticulated swellshark faces threats from coastal development, fishing pressure, and habitat degradation in its limited range along southeastern Australia. Pollution and climate change impacts, including ocean warming and acidification, further compromise the species' rocky reef and kelp forest habitats. The shark's slow reproductive rate and restricted distribution make populations particularly vulnerable to these cumulative pressures.
Key Facts
Habitat & Distribution
Cephaloscyllium fasciatum inhabits rocky reefs, kelp forests, and sandy bottoms in temperate coastal waters of southeastern Australia. The species occurs from shallow intertidal zones to depths of approximately 200 meters, showing preference for areas with complex bottom structure that provide shelter and foraging opportunities.
Threats
IUCN Red List: Critically Endangered
The reticulated swellshark faces threats from coastal development, fishing pressure, and habitat degradation in its limited range along southeastern Australia. Pollution and climate change impacts, including ocean warming and acidification, further compromise the species' rocky reef and kelp forest habitats. The shark's slow reproductive rate and restricted distribution make populations particularly vulnerable to these cumulative pressures.
Fishing & harvesting aquatic resources
Invasive non-native/alien species/diseases
Logging & wood harvesting
Marine & freshwater aquaculture
Other ecosystem modifications
Found in 5 Countries
Community Sightings
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Sources & Attribution
How to Cite
IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS
GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org
This page: SpeciesRadar (2025). Cephaloscyllium fasciatum (Cephaloscyllium fasciatum). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/reticulated-swellshark