Recent Fish Habitat News

Reservoir habitat artificial reef design criteria

Posted by

The morphology and complexity of habitat can be one of the more important factors influencing the effectiveness of structure as fish habitat. Relationships between habitat and species associations may best be summarized by the habitat diversity hypothesis, which states that species diversity increases with increasing availability of habitat types (Kovalenko et al. 2012). Fish abundance, richness, and diversity along shorelines of reservoirs are generally directly related to the structural complexity of available habitats (Barwick 2004; Newbrey et al. 2005). Higher species diversity can result in more complex food webs and longer trophic loops. Increased complexity of food webs creates a more stable fish assemblage that is less susceptible to chaotic dynamics and is made up of resilient interspecific interactions.

Interstitial space affects the size of fish attracted. Prey fish prefer small- or medium-size interstices when in the presence of predators (Crook and Robertson 1999). Early life stages of bluegill occupied small interstices within habitat, as close to body size as possible (Johnson et al. 1988), reducing danger from predation. However, even at younger life stages, largemouth bass were more likely to choose medium interstices rather than small ones. Potentially, this choice provides a balance between avoiding predation and having sufficient opportunity to ambush prey. Thus, diversity of interstitial space may best promote diverse fish assemblages within artificial reefs.

Besides complexity, the effect of structure on populations may depend on size of the reef. Rountree (1989) reported that fish abundance and diversity were related positively to structure volume and surface area. Bohnsack et al. (1994) reported that large reefs may have higher biomass densities than do small reefs but are oftentimes composed of fewer but larger individuals. Daugherty et al. (2014) reported that largemouth bass exhibited greater percentage occupancy in large structures but higher densities in small structures. Thus, depending on size, some artificial reefs may support fewer and larger fish, whereas others may support more and smaller individuals.


In first phase of long-term project on Tonto National Forest lakes, AZGFD biologists sink fish habitat structuresHabitat is dropped into Roosevelt Lake Thursday, April 20.PHOENIX – They are manmade homes for fish, some made of concrete, others of PVC, and like building a neighborhood, provide the architecture for sustainable life.The first step in placing fish [...]

Read More »

Fishiding HighRise Habitat Standing Tall in Arizona Reservoirs

It's begun! Some of our fisheries biologists began a Salt River chain-lakes habitat improvement project Thursday morning by dropping Fishiding structures made of reclaimed PVC materials to the bottom of Roosevelt Lake.Habitat is important for fish spawning, recruitment, growth, health and populations. These artificial structures attract bait fish, which then attract predatory fish for sport-fishing [...]

Read More »

TPWD collaborates on project to improve fish population at Proctor Lake with Fishiding and other products for the fish

Homer: TPWD collaborates on project to improve fish population at Proctor Lake Posted: Yesterday 9:05 p.m.0 CommentsBy Michael Homer Jr., Special to the Reporter-NewsIncreases in water levels are essential for restoring fish habitat and bringing local fisheries back to thriving after a period of prolonged drought. During droughts, fish can lose important habitat, which can render [...]

Read More »

Seneca Nation Project Update with Fishiding Habitat on Allegany Reservoir

  Seneca fishery grantShane Titus, Seneca Nation of Indians fisheries manager, explains the significance of the fish habitat structures being placed on the bottom of portions of the Allegheny Reservoir under a U.S. Fish and Wildlife Service grant. The structures are made of scrap vinyl siding components, which promote algae growth and provide shelter for fish.Posted: [...]

Read More »

AZGFD’s habitat enhancements with Fishiding habitat gets green light to begin installations

A return to glory: AZGFD’s habitat enhancements coming to Salt River-chain lakesPosted in: News Media Aug 9, 2016:  Fish take protection in underwater structure.This fall, the Arizona Game and Fish Department plans to use a crane on a 36-foot pontoon boat to sink fish habitat -- critical to anglers’ fishing opportunities -- into lakes along the [...]

Read More »

Allegany Reservoir habitat Project Update

Reconnecting 10 landlocked areas to the Allegany Reservoir improves resiliency for tribal community and wildlife10/21/2015Last edited 10/21/2015Contact: Rob Blumenthal (NFWF),Rob.Blumenthal@NFWF.org, 202-595-2457 A $350,000 project to restore riparian buffer and reconnect 10 landlocked areas to the Allegany Reservoir improves resiliency for Seneca Nation’s tribal community and wildlife.In June 2014, the National Fish and Wildlife Foundation (NFWF) awarded [...]

Read More »

​Artificial fish habitat or fish attractors, which do the fish need and why?

First off, let's not continue to confuse fish habitat with fish attractors. There are many substantial differences between the two and what each product is intended for. Both products attract fish, but only true habitat can grow more fish.    Under the Fisheries Act, fish habitat is defined as: “Spawning grounds and nursery, rearing, food supply [...]

Read More »