All about Fish Vetting – Dr Richmond Loh
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Follow me on: Facebook “Fin Page” – YouTube – Blog – Linkedin – Twitter
Dr Richmond Loh
Fish Vetting Medicines – Formulary of Fish Treatments has been reviewed by Dr Nick Saint-Erne in the Journal of the American Veterinary Medical Association (JAVMA). See the last page of attached pdf document by clicking on the link below:
How can you tell if a fish is sick? Sometimes fish are diseased and show no clinical signs…. yet. And before you know it, many fish start dying. This is why checking their gill health even when they are well is so important. So, what is it that I look for when I beam down on the gills? I’ll tell you how in this free video clip I’ve made and uploaded to my youtube channel and you can access it by clicking on this link.
You can tuned for more updates on multiple social media platforms including Facebook “Fin Page” – YouTube – Blog – Linkedin – Twitter
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Yours sincerely,
Dr Richmond Loh
BSc, BVMS, MPhil (Vet Path), MANZCVS (Aquatics), MANZCVS (Pathobiology), DipPM.
Veterinarian | Adjunct Senior Lecturer Murdoch University | WAVMA Communications Committee Member |
Secretary Aquatic Animal Health Chapter – Australian and New Zealand College of Veterinary Scientists (ANZCVS)
The Fish Vet, Perth, Western Australia, AUSTRALIA. Mobile Veterinary Service for fish and other aquatic creatures.
http://www.thefishvet.com.au
Ph: +61 (0)421 822 383
Dr Loh has added a heap of new photos on his Facebook fan page (http://www.facebook.com/thefishvetdrloh/photos_stream). Be sure to LIKE it to get more regular updates on that platform.
This critter seems very expensive to grow and you almost have to feed it a diet entirely of squid or fish to make some octopus. This high protein dietary requirement, plus their ingenuity in not staying put might mean putting this species in the large, growing pile of non-culturable species. I believe we should be directing the limited resources for aquaculture/fisheries research into known culturable species, into replenishing wild stocks and into looking after our environment which is the real resource.
See a previous post – https://thefishvet.com/2012/02/21/fish-are-fed-fish-to-grow-fish-should-we-be-farming-carnivores-or-vegetarians/
See the article below:
| Aquaculture | |||||||||||||||||
| Volume 369, Number 1-2 (November 2012) | |||||||||||||||||
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Growth and digestibility of formulated diets based on dry and freeze-dried ingredients in the common octopus (Octopus vulgaris) | ||||||||||||||||
| Authors: | P.S. Morillo-Velarde, J. Cerezo Valverde, M.D. Hernández, F. Aguado-Giménez, B. García García | ||||||||||||||||
| Author Affiliations: |
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| Source: | Aquaculture, Volume 369, Number 1-2 (November 2012) | ||||||||||||||||
| Page Numbers: | 139 – 144 | ||||||||||||||||
| Available Full Text: |
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| Abstract: | We studied the growth of O. vulgaris and the digestibility of two semi-moist diets (50% water) based exclusively on dry and freeze-dried ingredients (Diet S: 20% gelatin, 10% egg yolk powder, 5% Sardinella aurita and 15% Todarodes sagittatus; and Diet P: the same as the previous diet but substituting T. sagittatus by pea). Both diets had a similar macronutrient composition (70–73% protein DW, 12–13% lipids DW), a firm texture when introduced into the water and good acceptability. Survival was 100% with both diets. The specific feeding rates were also similar for both diets (1.0% body weight/day; P0.05), although the best results were obtained with diet S, which was responsible for an absolute growth rate of 9.6g/day and a feed conversion rate of 1.0, compared with the 2.2g/day and 3.9 obtained with diet P; P<0.05). The protein and lipid productive values were significantly higher for diet S than for diet P (43.6 and 13.3% vs. 20.2 and -0.5%, respectively). The good results obtained with diet S may be explained by its greater digestibility (93.3% for dry matter, 97.0% for proteins and 87.9% for lipids) compared with the corresponding value for diet P (73.8%, 92.1% and 85.0%, respectively). The findings demonstrate that O. vulgaris can be fed with dry or freeze-dried ingredients that have undergone mild heat treatments since they lead to good growth, feed efficiency and digestibility. Future studies on octopus on-growing could use a similar base to that proposed in this paper to obtain diets with better acceptability, stability or nutritional composition for commercial purposes. | ||||||||||||||||
| Citation: | P.S. Morillo-Velarde, J. Cerezo Valverde, M.D. Hernández, F. Aguado-Giménez, B. García García . Growth and digestibility of formulated diets based on dry and freeze-dried ingredients in the common octopus (Octopus vulgaris). Aquaculture, Volume 369, Numbers 1-2 (November 2012), pp. 139-144, <http://ejournals.ebsco.com/direct.asp?ArticleID=4FA5AD831B216E8D179E> | ||||||||||||||||
| URL: | http://ejournals.ebsco.com/direct.asp?ArticleID=4FA5AD831B216E8D179E | ||||||||||||||||
Check out – http://www.aquariumindustries.com.au/fish-school/
And for those who want more advanced knowledge and some of the fish veterinary secrets, check out "Fish Vetting Essentials" manual at https://thefishvet.com/
Check out this cool critter I uploaded to my youtube channel –
You need to watch it with sound. I had a bit of a chuckle when the client described it as resembling his wife! Not quite the late Steve Irwin, the Crocodile Hunter, but it could be his twin!
Can you identify this bug in the wet preparation? It’s apparently a transversotrematid, possibly Prototransversotrema steeri. It’s one of the few digeneans (they have an indirect life cycle via an intermediate snail host) that are ectoparasitic, living in the scale pockets (and for this reason, they are wider than they are long). Because they’re not exposed to the water, bath treatments won’t work. Oral praziquantel might be more efficacious, although it is unlikely to spread in an aquarium without the snail host. It’s not a common freshwater fish critter and this is why it has taken me over 10 years for my first encounter. There’s a species called T. haasi that has an especially broad host range among the Indo-Pacific reef fishes.
The two black spots are its eyes and between them is its pharynx/mouth. The loop with fluid moving through it is the gut, and it’s called a cyclocoel.
The information provided above has been the combined responses of Drs Marty Deveney and Al Dove. Thanks guys!
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Follow me on: Facebook "Fin Page" – YouTube – Blog – Linkedin – Twitter —
Yours sincerely,
Dr Richmond Loh
BSc, BVMS, MPhil (Vet Path), MANZCVS (Aquatics), MANZCVS (Pathobiology), DipPM.
Veterinarian | Adjunct Senior Lecturer Murdoch University | WAVMA Communications Committee Member |
Secretary Aquatic Animal Health Chapter – Australian and New Zealand College of Veterinary Scientists (ANZCVS)
The Fish Vet, Perth, Western Australia, AUSTRALIA. Mobile Veterinary Service for fish and other aquatic creatures.
http://www.thefishvet.com.au
Ph: +61 (0)421 822 383
From: “Dr. David Scarfe”
Date: 28 November 2012 20:08:08 AWST
Subject: AquaVetMed: Fish Pedicures & Possible Zoonotics
November 28, 2012
Agency warns of dangers of fish pedicures
In 2008, a pedicure trend swept the nation: tiny fish eating the dead skin off customers’ feet. Now the Centers for Disease Control and Prevention warn that the “doctor fish” may carry bacteria that could cause serious infections. Shortly after the fish pedicures began, public health agencies spoke out against the practice, and California, Florida and several other states banned it. Texas banned such pedicures in 2008.
The CDC published a report Wednesday by the Centre for Environment, Fisheries & Aquaculture Science in the United Kingdom, which studied the kinds of bacteria carried by the doctor fish, Garra rufa, an inch-long silver carp native to Southeast Asia.
“To date there has been only limited information on the types of bacteria associated with these fish,” lead researcher David Verner-Jeffreys said. “Our study identified some of the species of bacteria associated with this fish species, including some that can cause infections in both fish and humans.”
It’s no secret that water provides a breeding ground for all kinds of bacteria. Mix that with bacteria living on fish scales or in their waste and even the tiniest cut from an overzealous doctor fish, and the risk of infection is very real. Doctor fish are generally imported to salons from Indonesia or Malaysia, which can make it difficult to control the quality of the fish breeding and environment.
After an outbreak of strep bacteria last year in a shipment of the fish, the British government seized five containers from London Heathrow Airport to study what kinds of bacteria the fish were carrying. “The [strep] strain we isolated typically only causes disease in fish,” Verner-Jeffreys said. “We then went on to look at other consignments of apparently healthy imported G. rufa and found some other species of bacteria that can cause disease in humans and fish.” These bacteria included Aeromonas, which causes wound infections and gastrointestinal problems in humans; Streptococcus agalactiae, which causes skin and soft-tissue infections; and Mycobacteria, which the study reported have been responsible for skin infections in some pedicure clients in the U.K.
The researchers also found that these bacteria are often resistant to multiple drugs and therefore difficult to kill. “To date, there are only a limited number of reports of patients who might have been infected by this exposure route,” the report says. “However, our study raises some concerns over the extent that these fish, or their transport water, might harbor … pathogens of clinical relevance. It should be emphasized that neither us nor the [British] Health Protection Agency are advising that the practice should be banned,” Verner-Jeffreys said. “Any risks may be reduced by use of disease-free fish reared in controlled facilities under high standards of husbandry and welfare.”
See the source (http://tinyurl.com/c7gfovk) for the full story.
[The information referred to in this news story is neither a CDC or a CEFAS “Report.” It is actually a letter to the editor from David W. Verner-Jeffreys (CEFAS, UK), published in Emerging Infectious Diseases, 18 (6), June 2012. It is accessible at http://wwwnc.cdc.gov/eid/article/18/6/11-1782_article.htm. ADS-Mod]
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Most veterinarians have expertise in single fields. Dr Loh is unique in that he is one of only two veterinarians globally who has post-graduate, Membership qualifications in aquatic animal health and in veterinary pathology, admitted by examination to the Australian and NZ College of Veterinary Scientists. He also holds a research Masters degree. This means that he can solve your problems in the field or laboratory, and can devise strategies for research if the problems are more complex.
Dr Loh is affiliated with many world class organisations, serving as the Secretary of the Aquatic Animal Health Chapter of the Australian and New Zealand College of Veterinary Scientists, President-elect of the World Aquatic Veterinary Medical Association, a Senior Adjunct Lecturer at Murdoch University’s Veterinary and Biomedical Sciences section and a past Treasurer for the Australian Society of Veterinary Pathologists. He is also a member of the International Association for Aquatic Animal Medicine and a member of the European Association of Fish Pathologists.
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TheFishVetDrLoh has shared a video with you on YouTube:
“Trematode from a skin scrape of Cyphotilapia frontosa Tembwe.”
I had a bit of a chuckle when the client described it as having two eyes and a mouth, resembling his wife!…