Species account reviwed by Ralph Britz
Holotype: ZSI-WGFRS 10684 218mm TL. Paratypes: ZSI-WGFRS Seven specimens 150-242mm TL, no identification numbers.
Known only from the type locality: Well at Kuthiravattom, a suburb of Calicut, Kerala, India, elevation 40 meters. 11.2543oN, 75.8009oE.
The true habitat is not known but is probably small conduits within a laterite aquifer.
Britz et al. (2016) state that external similarity to West African Monopterus species suggests that M. digressus might be a member of the ‘Amphipnous group’ within Monopterus.
(Raghavan, R. and Ali, A. 2011. Monopterus digressus. The IUCN Red List of Threatened Species 2011: http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T172489A6902653.en. Downloaded on 06 July 2017).
As above only.
Two films of Monopterus digressus searching for food are available.
- Rosen, D. E. and Greenwood, P. H. (1976)
- Bailey, R. M. and Gans, C. (1998)
- Gopi, KC (2002)
- Kurup B.M. Radhakrishnan K.V. and Manojkumar T.G. (2004)
- Dahanukar, N, Raut, R and Bhat, A (2004)
- Ollier, CD and Sheth, HC (2008)
- Pati, AK and Parganiha, A (2010)
- Vincent, M and Thomas, J (2011)
- Dahanukar, N, Raghavan, R, Ali, A, Abraham, R and Shaji, CP (2011)
- Vincent, M. and Thomas, K.J. (2012)
- Vincent, M (2012)
- Britz, R., Kakkassery, F. and Raghavan, R. (2014)
- Raghavan, R., Das, K, Nameer, PO, Bijukumar, A and Dahanukar, N (2016)
- Britz, R., Doherty-Bone, T.M., Kouete, M.T., Sykes, D. and Gower, D.J. (2016)
- De Grave, S., Arjun, C.P. and Raghavan, R. (2018)
|Rosen, D. E. and Greenwood, P. H.||Journal Article||1976||A fourth neotropical species of synbranchid eel and the phylogeny and systematics of synbranchiform fishes|
|Bailey, R. M. and Gans, C.||Journal Article||1998||Two new synbranchid fishes, Monopterus roseni from penisular India and M. desilvai from Sri Lanka|
|Gopi, KC||Journal Article||2002||A new synbranchid fish, Monopterus digressus from Kerala, peninsular India|
|Kurup B.M. Radhakrishnan K.V. and Manojkumar T.G.||Conference Paper||2004||Biodiversity status of fishes inhabiting rivers of Kerala (S. India) with special reference to endemism, threats and conservation measures|
|Dahanukar, N, Raut, R and Bhat, A||Journal Article||2004||Distribution, endemism and threat status of freshwater fishes of the Western Ghats of India|
|Ollier, CD and Sheth, HC||Journal Article||2008||The High Deccan duricrusts of India and their significance for the ‘laterite’ issue|
|Pati, AK and Parganiha, A||Book Section||2010||Subterranean fishes of India|
|Vincent, M and Thomas, J||Journal Article||2011||Observations on the foraging behaviour of a subterranean fish Monopterus digressus (Synbranchiformes: Synbranchidae)|
|Dahanukar, N, Raghavan, R, Ali, A, Abraham, R and Shaji, CP||Book Section||2011||Chapter 3. The status and distribution of freshwater fishes of the Western Ghats|
|Vincent, M. and Thomas, K.J.||Book Section||2012||A preliminary survey on the subterranean piscine diversity in Thrissur District, Kerala, India|
|Vincent, M||Journal Article||2012||Occurence, distribution and troglomorphisms of subterranean fishes of penninsular India|
|Britz, R., Kakkassery, F. and Raghavan, R.||Journal Article||2014||Osteology of Kryptoglanis shajii, a stygobitic catfish (Teleostei: Siluriformes) from Peninsular India with a diagnosis of the new family Kryptoglanidae|
|Raghavan, R., Das, K, Nameer, PO, Bijukumar, A and Dahanukar, N||Journal Article||2016||Protected area and imperriled endemic freshwater biodiversity in the Westren Ghats hotspot|
|Britz, R., Doherty-Bone, T.M., Kouete, M.T., Sykes, D. and Gower, D.J.||Journal Article||2016||Monopterus luticolus, a new species of swamp eel from Cameroon (Teleostei: Synbranchidae)|
|De Grave, S., Arjun, C.P. and Raghavan, R.||Journal Article||2018||The discovery of Euryrhynchidae (Crustacea: Decapoda) in India, with the description of a new genus and species|