This is Beyond the Clear Walls, a new series aiming to focus on aquarium fish species outside the confines of the aquarium, hence the title. Here I talk about the algae eater family Gyrinocheilidae, a tiny family of fishes related to carps and loaches. They suck, literally! This family of fishes has a variety of distinctive characteristics that make them worth anyone's interest, especially their unique mouths! This is a re-release of the first video, now with less material to trigger a copyright claim and better volume mixing!

Timestamps:
0:00 - intro
1:39 - distinguishing features
3:21 - tangent
4:35 - characteristics
5:00 - lips
6:34 - suction
8:03 - breathing
9:03 - tubercles
10:13 - missing features
11:31 - taxonomy
19:03 - life history
20:34 - conservation
22:48 - aquarium care
27:02 - conclusion
Sources:

Allen, D.J. 2011. Gyrinocheilus pennocki. The IUCN Red List of Threatened Species 2011: e.T181297A7666673. http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T181297A7666673.en.

Apitanakul, P., & Wetchakul, W. (2002). Some biological aspects of siamese algae eater, Gyrinocheilus aymonieri (Tirant, 1884) in the Yom river, Sukhothai province. Warasan Kan Pramong.

Benjamin, M. (1986). The oral sucker of Gyrinocheilus aymonieri (Teleostei: Cypriniformes). Journal of Zoology, 1(2), 211-254.
Benjamin, M., & Ralphs, J. R. (1994). The dorsal groove and associated structures on the head of the sucking loach, Gyrinocheilus aymonieri (Cypriniformes). Journal of fish biology, 44(2), 327-330.

Chapman, F. A., Fitz‐Coy, S. A., Thunberg, E. M., & Adams, C. M. (1997). United States of America trade in ornamental fish. Journal of the World Aquaculture Society, 28(1), 1-10.

Frank, Neil; Liisa Sarakontu. "Algae Eating Cyprinids from Thailand and Neighboring Areas". The Aquatic Gardener: Journal of the Aquatic Gardeners Association. Aquatic Gardeners Association. Archived from the original on 2011-10-10.

Froese, R. and D. Pauly. Editors. 2017.FishBase.
World Wide Web electronic publication.
www.fishbase.org, ( 06/2017 )

Jayaram, K. C. (1950). Respiratory and other adaptive modifications in the genus Gyrinocheilus Vaillant and their significance in constituting the family Gyrinocheilidae Hora. Zool. Surv. India (Indian Museum, Calcutta), 48, 107-112.

Kenji Saitoh, Tetsuya Sado, Michael H. Doosey, Henry L. Bart, Jun G. Inoue, Mutsumi Nishida, Richard L. Mayden, Masaki Miya; Evidence from mitochondrial genomics supports the lower Mesozoic of South Asia as the time and place of basal divergence of cypriniform fishes (Actinopterygii: Ostariophysi), Zoological Journal of the Linnean Society, Volume 161, Issue 3, 1 March 2011, Pages 633–662, https://doi.org/10.1111/j.1096-3642.2010.00651.x

Roberts, T. R., & Kottelat, M. (1993). Revision of the Southeast Asian freshwater family Gyrinocheilidae. Ichthyol. Explor. Freshwat, 4, 375-383.

Stout, C. C., Tan, M., Lemmon, A. R., Lemmon, E. M., & Armbruster, J. W. (2016). Resolving Cypriniformes relationships using an anchored enrichment approach. BMC evolutionary biology, 16(1), 244.

Termvidchakorn, A., & Hortle, K. G. (2013). A guide to larvae and juveniles of some common fish species from the Mekong River Basin. Mekong River Commission.

Vidthayanon, C. (2012). "Gyrinocheilus aymonieri (Honey Sucker, Sucking 'Loach')". The IUCN Red List of Threatened Species. Version 2014.3. International Union for Conservation of Nature and Natural Resources.

Music used:

Summoning, JPS, Conflux, and Plastic Dream (4 AM) by Jacob Hepple

"Endless Journey", "Soul of Garage", "Horizon", "From the East to the West" and the Mazda Dealer theme by Isamu Ohira

"Continuation" by Daiki Kasho

"Canyon.mid" by George Stone

"Trance" by 009 Sound System

"Back on the Beat" from the Killer Tracks Library

GT2000 Menu Theme

"A Man of the World" by Masahiro Andoh

Video Sources:

My own recordings

https://www.youtube.com/watch?v=1hDwzjYNTF0
https://www.youtube.com/watch?v=s0m2fETWC-o
https://www.youtube.com/watch?v=oL8fYQuTBbs
https://www.youtube.com/watch?v=B5QmhrCgDbE
https://www.youtube.com/watch?v=yrRDiCa0MeE
https://www.youtube.com/watch?v=fIGwKCJyDdo

Special thanks to:
-The Aggie Aquarium Association for reviewing a very early test version of this video
-Mr. Jack Lacy for helping me gather footage
-Dr. Kevin Conway for inspiring the video
-Dr. Liz Marchio for proofreading the original term paper the video is loosely based on
-My immediate family for their valuable support and feedback
-The algae eaters I recorded for being okay photo subjects
-All the friends I've bothered through the months with progress updates