Search found 1395 matches

by Mike_Noren
Wed Oct 31, 2012 10:35 am
Forum: Taxonomy & Science News
Topic: speciation vs geographical variance
Replies: 15
Views: 3036

Re: speciation vs geographical variance

Geographical "races" in fish are nearly all un-named species. A species is any group of organisms who have embarked on their own evolutionary trajectory, i.e. are separate from all other groups of organisms. Usually, but not always, this separation is caused by geographical separation. Close in time...
by Mike_Noren
Sun Oct 28, 2012 4:15 pm
Forum: Taxonomy & Science News
Topic: Gut microbes in Panaque
Replies: 15
Views: 2303

Re: Gut microbes in Panaque

I have two big prolems with Plos one in terms of their review policies. First, Plos one is not in favor of reviewer anonimity. I find that a big problem. Second, they allow authors to exclude specific reviewers. * These are not issues with open access, but specifically with editorial decisions of P...
by Mike_Noren
Sun Oct 28, 2012 10:12 am
Forum: Taxonomy & Science News
Topic: Gut microbes in Panaque
Replies: 15
Views: 2303

Re: Gut microbes in Panaque

The conflict I see is how do readers know what in open access is quality information and what in open access is bad science. That is the same in also in the pay-walled journals: all journals, including the highest impact ones like Nature, Science and Lancet are brimming with bad science (ESPECIALLY...
by Mike_Noren
Sat Oct 27, 2012 4:17 pm
Forum: Taxonomy & Science News
Topic: Gut microbes in Panaque
Replies: 15
Views: 2303

Re: Gut microbes in Panaque

Good video. The public should know how ridiculous and offensive the publishing situation is in science. Here's an article on the subject of how the publishing houses are raking in cash from scientists and libraries, with a 60% profit margin: http://jrsm.rsmjournals.com/content/99/9/452.full It's fro...
by Mike_Noren
Sat Oct 27, 2012 3:51 pm
Forum: South American Catfishes (Loricariidae - Plecos et al)
Topic: Which Xingu species are being bred?
Replies: 14
Views: 1703

Re: Which Xingu species are being bred?

I'd say the only Volta Grande species which is being bred in captivity in sufficient numbers that it is "safe" even if the wild population is wiped out, is Hypancistrus zebra.
by Mike_Noren
Thu Oct 25, 2012 8:57 pm
Forum: South American Catfishes (Loricariidae - Plecos et al)
Topic: Leech?
Replies: 22
Views: 2197

Re: Leech?

For what it's worth(tm) and I'm Not An Expert(c), many, perhaps most, species of leech are not parasites but small predators who scavenge and eat snails and worms. That said, I know of one documented case where a snail-eating leech attacked and killed guppies, so even the non-parasitic species may n...
by Mike_Noren
Tue Oct 23, 2012 8:01 am
Forum: Tank Talk
Topic: Saltwater information for sea horses
Replies: 13
Views: 1966

Re: Saltwater information for sea horses

I was talking with a couple of marine aquarists somewhere in the spring and from what I gathered keeping sea horses successfully is right up there with getting the tricky l-numbers to breed successfully. Depends on species, but as a rule they're not particularly sensitive, and they're quite easy to...
by Mike_Noren
Sun Oct 07, 2012 7:06 pm
Forum: What is my catfish?
Topic: otocinclus?
Replies: 3
Views: 466

Re: otocinclus?

Nannoptopoma has been synonymized with Hypoptopoma, so although they're still sold under their old name they're really Hypoptopoma sp`peru`.
by Mike_Noren
Sun Sep 23, 2012 11:26 am
Forum: Asian Catfishes
Topic: Looking for your experience-reports about HARA JERDONI
Replies: 14
Views: 3075

Re: Looking for your experience-reports about HARA JERDONI

1. Unknown. Mine are still alive (one year). 2. I'm convinced it's not important. The few specimens in our collection database are listed as occurring in "very soft mud" in a shallow ditch, where they were collected by hand by fishermen for the aquarium trade. Mine are kept in an aquarium where the ...
by Mike_Noren
Tue Sep 18, 2012 7:48 am
Forum: Tank Talk
Topic: Peat moss Walstad method
Replies: 4
Views: 2309

Re: Peat moss Walstad method

by Mike_Noren
Sat Sep 15, 2012 8:43 am
Forum: South American Catfishes (Callichthyidae - Corys et al)
Topic: Mulm in fry tanks?
Replies: 5
Views: 1151

Re: Mulm in fry tanks?

I suspect the answer depends on how much effort you're willing to put in to it, and whether you want to maximize fry survival or minimize work. If you're willing to change water and clean the aquarium daily, and perhaps also dose chemicals like methylene blue, acriflavine or antibiotics, then I expe...
by Mike_Noren
Sun Sep 09, 2012 11:45 am
Forum: Speak Easy
Topic: A hitchhiker from a recent Wild Brazil/Peru Import
Replies: 12
Views: 1486

Re: A hitchhiker from a recent Wild Brazil/Peru Import

They are not difficult to maintain in captivity, will eat pretty much any live food (earthworms, bloodworms, small crustaceans, and, yes, small fish), but may take up to a couple of years before it metamorphoses into an adult dragonfly.
by Mike_Noren
Wed Sep 05, 2012 8:43 pm
Forum: Speak Easy
Topic: Finally! The fishing season!
Replies: 85
Views: 8401

Re: Finally! The fishing season!

racoll wrote:Phoxinus phoxinus?
Yes. The picture shows a male in faded breeding dress.
by Mike_Noren
Wed Sep 05, 2012 7:59 pm
Forum: Speak Easy
Topic: Finally! The fishing season!
Replies: 85
Views: 8401

Re: Finally! The fishing season!

I managed to get some time off and go on a fishing trip in Lapland this summer. Great weather and lots of fish, but no photos unfortunately. However, being an aquarist I couldn't help myself and brought 20 of these guys with me home: http://i47.tinypic.com/2m6u2j4.jpg They're doing fine, though I do...
by Mike_Noren
Sat Aug 25, 2012 5:46 pm
Forum: South American Catfishes (Loricariidae - Plecos et al)
Topic: L46 and the Belo Monte dam
Replies: 247
Views: 31484

Re: L46 and the Belo Monte dam

Well, it does seem a bit more hopeful than the last few times the dam was stopped. Maybe it can actually succeed this time. If anyone feels they'd like to contribute, International Rivers is asking for donations to fight the dam. I've donated. Disclaimer: I'm not affiliated with International Rivers.
by Mike_Noren
Thu Jul 26, 2012 7:49 am
Forum: Asian Catfishes
Topic: Odd Hara jerdoni behavior
Replies: 5
Views: 1254

Re: Odd Hara jerdoni behavior

I would only worry about the O2 levels if the tank temperature is way up. Yeah, they don't seem particularly sensitive. No worries if it is spawning or eating ;-) -Shane Well, slight worries as I'm keeping them with endler's guppies and Biotoecus cichlids, both of which may eat eggs & larvae... Is ...
by Mike_Noren
Wed Jul 25, 2012 10:43 pm
Forum: Asian Catfishes
Topic: Odd Hara jerdoni behavior
Replies: 5
Views: 1254

Odd Hara jerdoni behavior

My Hara jerdoni typically stay hidden in the leaf litter, but the last few days they've been hanging around in the floating plants up by the surface. Oxygen shortage due to the warm summer weather, preying on some food source (guppy larvae?), or spawning?
by Mike_Noren
Tue Jul 24, 2012 9:06 pm
Forum: Taxonomy & Science News
Topic: The dangers of reconstructing evolution using mtDNA
Replies: 3
Views: 643

Re: The dangers of reconstructing evolution using mtDNA

Sadly his point is rubbish. If you want to see truly ridiculous trees, brutally and obviously at odds with morphology, read studies using only nuclear genes. Exhibit A is this gem , which used six nuclear genes to give us the new superfamily Paedocypridoidea, a result so silly one of the authors con...
by Mike_Noren
Tue Jul 24, 2012 5:30 pm
Forum: South American Catfishes (Loricariidae - Plecos et al)
Topic: killer snails eating my L134 eggs?
Replies: 20
Views: 5962

Re: killer snails eating my L134 eggs?

I've never had any problem with Red Ramshorn ( "Planorbis" rubrum ) snails either, although the jury seem to be out on these. I'm increasingly suspicious of these, I've never seen them eat any eggs but I also never seem to get any fish reproduction in aquaria with these snails. As an aside I'm surp...
by Mike_Noren
Sun Jul 22, 2012 8:08 am
Forum: South American Catfishes (Loricariidae - Plecos et al)
Topic: killer snails eating my L134 eggs?
Replies: 20
Views: 5962

Re: killer snails eating my L134 eggs?

Just curious what you mean by "regular ramshorns", this or this?