RE: [RML] Tropical Fish Granuloma

Mach T. Fukada (fukada at
Mon, 15 Jun 1998 05:51:28 -1000

I am more inclined to believe it was a pH crash. This happened to
me when I first got them. Please check what your KH, hardness and pH are.
It sounds like a problems that a friend of mine here on Oahu has. Where I
live in Manoa (the valley of rainbows, really ;-) we have magic water that
prevents this. However there are those that will suggest that a steady
diet of white worms are much too rich for most bows, too much fat.

check your water and let me know. I can probablly get a bunch more to you
for shipping :-)

>Hey Mach. I was out of town this weekend and missed a single feeding.
>Something went wrong as all of the furcatus are dead as of Sunday night.
>All were in great shape and feeding well on Friday afternoon. I feed
>heavily on whiteworms. Do you think that could have been a problem?
>Ralph T.
>Dr. Ralph Taylor
>Associate Dean, College of Science
>270 Science Building
>Phone: (304) 696-2338
>FAX: (304) 696-3243
> -----Original Message-----
> From: Mach T. Fukada [SMTP:fukada at]
> Sent: Sunday, June 14, 1998 7:32 PM
> To: rainbowfish at
> Subject: Re: [RML] Tropical Fish Granuloma
> Allmost the same thing that the vet that deals with fish here in
> said. It is everywhere. It can be present on plants, moist
> anything. There is allomst nothing we can do about it. More
> is to determine the conditions that makes M. marinum pathogenic.
>It seems
> like most of the time it is a saprophyte or weak pathogen that
>affects fish
> of compromised health (poor water quality (pH, ammonia, etc)
>over feeding,
> etc. There have been reports of virulent pathogeninc strains
> ammuck and wiping out people (Fred Morita's swortail, platty,
> opperation). In these cases virtually overnight it spread from
> asymptomatic fish to the rest of the tanks. However, I will
>admit that
> after testing his water it seems that it had a hight pH (8.0)
>and now
> buffering (KH effectively 0). So his pH fluctuates widely and I
>am sure
> results in the fish being stressed out.
> Adrian,
> saw your article in the mag. looks good. Nice to see
>that some
> bows are getting some good press. No Pseudomugils, I was bummed
> >In my continuing quest to find a solution to the
>Mycobacteriosis problem
> >faced by fishkeepers I stumbled across an article written in
>1976 on
> >Tropical Fish Granuloma. I will be reprinting the article in a
>future ANGFA
> >Bulletin. However, here is an interesting extract:
> >
> >"Mansson reported a similar case in Sweden in 1970, and
>identified Daphnia
> >as a possible source of infection. Mansson found M. marinum not
>only in a
> >patient's skin lesions, but also in sand snails and dead fish
>in the
> >patient's aquarium, and in mud in a pond from which Daphnia had
> >collected and fed to the fish. Also in 1970 were reported three
>more cases
> >of M. marinum infection in California, all of aquarists who cut
>their hands
> >just before or during work on a tropical aquarium.
> >
> >The first cases in the southern hemisphere were reported from
>Auckland, New
> >Zealand, in 1971. One was a tropical fish keeper at the
>Auckland Zoo,
> >another a pet shop owner, and a third a part time assistant in
>a pet shop.
> >M. marinum was isolated from all three cases. Tanks at the Zoo
>and the pet
> >shops, and also the elephant pond at the Zoo from which the
>keeper collected
> >Daphnia, were checked for the presence of M. marinum. It was
>found in five
> >tanks at the Zoo, and in a dead ram and a dead axolotl at the
>Zoo, but not
> >at the other sites. Cultures from a Danish brand of dried
>daphnia were also
> >negative (drying or freeze-drying would not kill M. marinum if
>it were
> >present)."
> >
> >Adrian.
> >
> >
> > Adrian R. Tappin
> > "Home of the Rainbowfish"
> >
> >
> >
> Mach T. Fukada, Web Master
> fukada at
> Honolulu Aquarium Society

Mach T. Fukada, Web Master
fukada at
Honolulu Aquarium Society