Network Pipefish
Network pipefish
Network pipefish
Network pipefish
Network Pipefish
Network Pipefish
Network Pipefish
Fishes · Bony fishes · Pipefishes

Network Pipefish

Corythoichthys flavofasciatus (Rüppell, 1838)
syn. Corithoichthys flavofasciatus, Corythiochthys flavofasciatus, Corythoichthys fasciatus, Corythoichthys flavo-fasciatus, Corythoichthys sealei, Corythoichthys serrulifer +2 more
12 cm1-25 mLeast Concern
1158

Corythoichthys flavofasciatus, commonly known as the network pipefish, reticulate pipefish, and yellow-banded pipefish, is a marine fish species belonging to the family Syngnathidae.

This species can be found in various regions, ranging from the 🌊 Red Sea and Eastern Africa to the Tuamotu (🇵🇫 French Polynesia), the Ryukyu Islands (🇯🇵 Japan), and northern 🇦🇺 Australia, as well as the Austral Islands (🇵🇫 French Polynesia). It is typically found in tropical climates and is often associated with lagoons and coral reefs, residing at depths ranging from the low tide line to 25 meters.

Males of Corythoichthys flavofasciatus can grow to a length of approximately 12 centimeters (4.7 inches). These fish possess 26-36 dorsal soft rays and display a distinct body pattern consisting of yellow and brown stripes. The snout of this species is characterized by a red coloration. Male specimens develop orange stripes and striking light blue spots. It is worth noting that Corythoichthys flavofasciatus bears a strong resemblance to Corythoichthys conspicillatus, another species within the same genus.

Regarding its reproductive behavior, Corythoichthys flavofasciatus is ovoviviparous, meaning that the embryos develop within eggs that remain inside the female's body until hatching occurs. These fish are believed to be monogamous and are commonly observed in pairs. The male possesses a ventral pouch located beneath the tail, in which it carries the eggs. The incubation period usually lasts between 10 to 12 days. As for its diet, this species primarily consumes small invertebrates such as copepods, along with small isopods and ostracods. In 🇵🇫 French Polynesia, it is known to be preyed upon by Epinephelus merra, a predator fish.

Some experts argue that Corythoichthys flavofasciatus is only found in the 🌊 Red Sea, whereas the species encountered in the remaining Indo-Pacific region is actually Corythoichthys conspicillatus.

Why it's threatened

Residential & commercial development
Housing & urban areas · Commercial & industrial areas · Tourism & recreation areas
Biological resource use
Unintentional effects: (subsistence/small scale) [harvest] · Unintentional effects: (large scale) [harvest]
Pollution
Sewage · Run-off · Nutrient loads · Soil erosion, sedimentation
Climate change & severe weather
Habitat shifting & alteration · Temperature extremes

The major threat to wild populations of Corythoichthys flavofasciatus is coral reef habitat loss due to coastal development, pollution, destructive fishing practices, and climate change (Bruno and Selig 2007, Carpenter et al. 2008, De'Ath et al. 2012). The rate of coral decline has not been quantified throughout the species range, but it is thought to be occurring over timeframes longer than ten years or three generation lengths. The species is also able to utilise several other habitat types.

Corythoicthys flavofasciatus may also be caught as bycatch in trawl fisheries, but this has not been observed or quantified.

Threat classification from the IUCN Red List.

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Last Update: June 28, 2026