Artificial reefs/Breeding reefs/Underwater survey

Random stacking installation of FP reefs can create a large-scale mass of artificial reefs that has both a complicated small space and height.

A school of Scombrops boops	model image

Features of random stacking installation of FP reefs

１．Artificial reefs have many complex small spaces, and create much bulk volume.
２．The complex space with shadow of artificial reefs create nursery such as spawning grounds and hiding places.
３．Highly stacked artificial reefs give a strong stimulus to migratory fish even in deep water.
４．Large-scale change of tidal near the artificial reefs strengthen feeding and resting　functions.
５．Artificial reefs combination with each other and overlap increase wave resistance.

(Image of random stacking installation)

〈 vortex basin 〉 　Around the FP reef, a complex vortex basin is generated by the flow that passes through the inside, and the vortex basin is widespread around random stacking installation of FP reefs. In the vortex basin, the flow becomes gentle, becoming a resting place for fish with weak swimming ability and a feeding place for various fish due to the stagnation of plankton, contributing to the improvement of collection and proliferation effect. It also stimulates migratory fish species.

Function of random stacking installation

Habitat for rock fish
The complex, shaded space provides a good habitat for rock fish, such as shelters and hiding places．
Sebastes inermis	Sebastes schlegelii	Epinephelus septemfasciatus/Apogon semilineatus

Nursery for juvenile
For juvenile, the complex interior space of mass of artificial reefs serves as a refuge for piscivorous fish, and the vortex basin around artificial reefs serves as a resting place and feeding ground.
Spratelloides gracilis	Juvenile　Sebastes thompsoni	Trachurus japonicus (Immature fish season )

A collection of various fish
Random stacking installation of FP reefs provide a variety of fish with suitable habitats, due to their height, wide biofouling surface, and complex internal space. Therefore, it forms an ecosystem consisting of a wide variety of fish, from juveniles to adults.
Parapristipoma trilineatum	Seriola quinqueradiata	Pleurogrammus azonus
Branchiostegus japonicus	Oplegnathus fasciatus	Microstomus achne

Random stacking installation of FP reefs survey results

　FP reefs has been adopted in various parts of Japan.

Random stacking installation of FP reefs　survey case video (Click the photo / district name to see the video)Only Japanese

Shimoda district, Shizuoka prefecture ・Water depth　40-43m ・Model　FP1.6N/FP3.25type ・5years after installation ・Survey date: April 2010 Toyoura district, Yamaguchi prefecture ・Water depth　45ｍ ・Model　FP1.6N/FP3.25type ・1 year after installation ・Survey date: October 2011 Ajika district, Nagasaki prefecture ・Water depth　91ｍ ・Model　FP2.00/3.25type ・3 years after installation ・Survey date: July 2014

FP reefs that can stacked randomly

　Introducing products that can be stacked randomly.
Click the artificial reef name to see the product details.

ＦＰ１．５Ｇ	ＦＰ１．６Ｎ	ＦＰ２．００type	ＦＰ３．００type	ＦＰ３．２５type
Inner frame Culbase attached FP3.25type	ＦＰ３．３０type	ＦＰ４．００Rtype	ＦＰ４．００type

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