Ember Tetra black spots 12/29/16
Season's Greetings and best wishes for a happy 2017. Thanks for the awesome
job you keep doing.
<And thanks for the kind words.>
The attached image is of a few of my Ember Tetras of a group of 11 that have
been living happily for about 1.5 years in a heavily planted 29 gallon. Tank
is it its 6th year. Quick question: any idea what those black spots/marks
along the lateral line of the biggest fish signify? Or are they more likely
to be deposits internally along the spine? I do not have a
microscope so cannot sample a tissue scrape.
<They have the speckled, regular appearance of melanophores rather than
sharp black spots or cysts. So my assumption here is that they're part of
the fish rather than a parasite. Why is more difficult to answer! Sometimes
melanophores change colour for normal, such as sexual, reasons. Sometimes
fish turn the melanophores up or down because of ambient conditions such as
lighting (Moonlight Gouramis famously have a black band that appears only
under dim lighting). Sometimes they get 'jammed' in an unusual state by
damage to the nerves. Sometimes they're simply different because of
genetics, whether a mutation in this particular Ember tetra or because this
isn't actually a typical Ember tetra but an example of a related species or
hybrid. Bottom line, if the fish is behaving normally, I wouldn't worry.>
Tank has other tetras, Corys, a pair of Agassizzis, a Pearl Gourami and a
pair of Bristle Nose Pleco
High nitrates >40 ppm, pH 6.5, TDS 180 ish, 30 percent water change weekly.
Fed Hikari Micro Pellets, Tetra pellets, Ocean Nutrition Spirulina and brine
shrimp flakes, NLS Thera A and occasionally freeze dried blood and Tubifex
Tank has had episodes of what was diagnosed as NTD in Neons and Black Neons
and affected fishes euthanized as per your suggestion.
Should mention that I add 4 ml 2 percent Glutaraldehyde daily to augment
Any input will be most be most helpful.
Have a great year-end and thanks again,
<And to you, too. Cheers, Neale.>