• Redigobius lekutu

Redigobius lekutu is a goby, belonging to the family Gobiidae.
Also known as:
Local Names:

Description

Redigobius lekutu is a goby, belonging to the family Gobiidae. Members of this family are generally small fishes, and this species is no exception. It measures only 3.5 cm from the snout to the tip of the tail - probably smaller than the index finger of the average adult. This species is new to science and its formal description was completed and published in 2010 by goby specialist Helen Larson.

Distribution

Redigobius lekutut is currently known only from the upper Lekutu and upper Dreketi river catchments on Vanua Levu.

Habitat Ecology and Behaviour

This species has been observed in mid-water schooling, only in clear headwater areas. This fish is carnivorous and feeds on benthic invertebrates. There is evidence of parental care of demersal eggs. There has been no detailed ecological study conducted on this species, only general observations.

Threats

The main threat to this endemic fish is habitat destruction brought about by the logging activities being carried out in its only known sites; and the possibility of introduced invasive species, such as Tilapia sp (malea) encroaching the headwaters. Excessive gravel and boulder removal are also direct threats. The restricted distribution of this species to two sites on Vanua Levu makes this species very vulnerable, and could affect their future survival. Introduced and invasive fish are capable of out competing or preying on these endemic fishes. The lack of information available on this species means that we do not know how well this species will be able to cope with the threats which have been identified.

Conservation Status

There is no legislation to protect this species or other freshwater fish. Jenkins (2003) makes recommendations that the Upper Lekutu be part of aForest Reserve Network in their bid to include priority conservation areas for Fiji’s freshwater biodiversity.

Freshwater researcher, Aaron Jenkins of Wetlands International, says that this species, if it was to be included in the IUCN Redlist of Threatened Species, would be listed as Critically Endangered. A team of researchers is currently attempting to include this species in the IUCN Redlist. Wetlands International is currently working with the upper Dreketi landowners to establish a headwater reserve area.

Remarks and Cultural Significance

There is no legislation to protect this species or other freshwater fish. Jenkins (2003) makes recommendations that the Upper Lekutu be part of aForest Reserve Network in their bid to include priority conservation areas for Fiji’s freshwater biodiversity.

Freshwater researcher, Aaron Jenkins of Wetlands International, says that this species, if it was to be included in the IUCN Redlist of Threatened Species, would be listed as Critically Endangered. A team of researchers is currently attempting to include this species in the IUCN Redlist. Wetlands International is currently working with the upper Dreketi landowners to establish a headwater reserve area.

References

Boseto (2006);
Jenkins (2003);
Jenkins (personal communication);
Seeto (personal communication).

Front Page Photo: Aaron Jenkins
Related Media
Most Viewed Fishs
Endangered Species Compendium
Latest Project
Taveuni National Park Project
Located in the Province of Cakaudrove, the island of Taveuni is Fiji’s 3rd largest island. Since the 1980s, the National Trust and the Fiji Department of Forests have been advocating for the merger of the Ravilevu Nature Reserve, Taveuni Forest Reserve and the Bouma National Heritage Park to form the Taveuni National Park. In 1993 the Fiji Department of Environment proposed the ‘Integrated Development Plan for Taveuni’ supporting this combination to better promote the wilderness and cultural features of Taveuni to harness Taveuni’s tourism market to its full potential. The Fiji Department of Forests, National Protected Areas Committee, Cakaudrove Provincial Council and NatureFiji-MareqetiViti, with support from the Critical Ecosystems Partnership Fund are revitalising efforts to bring Taveuni's three current protected areas into one Taveuni National Park: 1. Taveuni Forest Reserve (FR). Declared in 1914. Size: 11, 160 HA 2. Ravilevu Nature Reserve (NR). Declared in 1959. Size: 4, 108 HA 3. Bouma National Heritage Park (BNHP). Established by covenant in 1990. 1, 417 HA. TAVEUNI’S WILDLIFE AND LANDSCAPE Much of Fiji’s land and forest has now been impacted and modified by deforestation, commercial and subsistence agriculture, plantation timber production and/or invasive alien species. We must also remember the historic impacts of the first human settlement that resulted, for example, in the extinction of many species and conversion of dry forests to grasslands. Not only has Taveuni retained significant forest and wetland ecosystems across a full altitudinal range (ridge to reef), but also it has not been severely impacted by invasive species, in particular the mongoose. The absence of the mongoose from Fiji’s third largest island has resulted in the retention not only of Taveuni’s endemic fauna species but also Fijian endemics that have been extirpated or are highly threatened on Viti Levu and Vanua Levu. SPECIAL LANDSCAPES ON TAVEUNI Taveuni’s outstanding landscape qualities are derived mainly from its tropical forest cover. From all points around the Taveuni coastline, there are views of the undisturbed, densely forested uplands. Frequently cloud and mist-capped, the rugged central range dominates the landscape with characteristic emergent volcanic cones. From the peaks of the central range descend the long symmetry of old lava flows covered with dense rainforest. Taveuni is one of the very few islands where the scale of negative land use impacts has been limited. But current trends of widespread soil degradation and encroachment into the reserves indeicate taht this is changing for the worse. The thriving agricultural industry of Taveuni can attribute its success to the Taveuni Forest Reserve which was established to ensure unlimited water supply and free ecosystem services to the people of Taveuni. While the Taveuni FR currently provides little monetary benefit to landowners, combined with the Ravilevu NR and Bouma National Heritage Park, the Taveuni National Park will build a strong imperative for ecotourism development. THE PROJECT Not until 2009 were landowners informed about plans which had been around for 30 years on possible Protected Areas development, and the potential of Taveuni's forests for conservation. If there is one conspicuous lesson of the lead up work of the Sovi Basin Protected Area project, it was that there was no real progress until the landowners and the Fijian administration took up ownership of the process. Getting the landowners involved in the PA discussions is the main objective of this project.
Latest Newsletter
FIJI: STATE OF BIRDS 2013
Birds are by far Fiji’s most conspicuous form of terrestrial wildlife – they are inspirational, they sing, they are fairly easy to observe and identify, and there is a limited number of species. Biodiversity conservation in Fiji requires the support of landowners and the populace, who can better understand, participate in and support conservation if they are familiar with and knowledgeable about the species of concern. Fiji’s first ever State of Birds report ‘Fiji: State of Birds 2013’ has been prepared by NatureFiji-MareqetiViti with the assistance of the Department of the Environment and local ornithologists. The 44 page report provides an overview of the issues and critical considerations facing Fiji’s birds and emphasises how useful birds are as flagships for other elements of our biodiversity. Birds have long been used as indicators of the state of the world’s ecosystems, providing insights into habitat loss, deterioration, pollution and, increasingly, for climate change.