Search found 449 matches

by michi tobler
Wed Jun 08, 2011 9:46 pm
Forum: Equipment, Supplies, Books and DIY
Topic: Two air pumps in one system
Replies: 8
Views: 5096

Re: Two air pumps in one system

Thanks for all the feedback guys! Installed the second pump this afternoon. Got some water flow going now. The fish actually have to swim to stay in place...
Cheers, m
by michi tobler
Wed Jun 08, 2011 10:06 am
Forum: Equipment, Supplies, Books and DIY
Topic: Two air pumps in one system
Replies: 8
Views: 5096

Re: Two air pumps in one system

Hi guys, thanks for the feedback. The problem is: the pump I have is already the largest piston pump on the market. I decided to call the manufacturer today. He said that multiple piston pumps are good to be hooked up to the same system (as long as all of them have the same capacity). The model I ha...
by michi tobler
Tue Jun 07, 2011 5:18 pm
Forum: Equipment, Supplies, Books and DIY
Topic: Two air pumps in one system
Replies: 8
Views: 5096

Two air pumps in one system

Hi guys, after starting all tanks in my fish room (all filtered through bubble filters), the air pressure is somewhat lower than I like. I have a second air pump. Can I hook up the second pump to the same circle? Or do I actually have to redo all the plumbing and create two independent circles (whic...
by michi tobler
Sun May 29, 2011 5:48 pm
Forum: Central American Cichlids
Topic: Cryptoheros sp. what?
Replies: 13
Views: 4622

Re: Cryptoheros sp. what?

Piotr,
these are clearly C. myrnae, also your "females", not hybrids or C. septemfasciatus. However, I'm not sure whether your females are females. Females have a conspicuous spot in the dorsal. That spot may still develop in fish as small as yours, but they may also be immature males.
Cheers, m
by michi tobler
Tue May 03, 2011 4:29 pm
Forum: Taxonomy
Topic: Synspilus A Junior Synonym of melanurus?
Replies: 37
Views: 11880

Re: Synspilus A Junior Synonym of melanurus?

Hi all, this is an interesting discussion! By definition, natural groups are monophyletic groups, I concur with Willem. But while higher taxonomic groups (genera, families, etc.) should - by convention - be natural, i.e. include all descendants from a common ancestor, biological species do not neces...
by michi tobler
Fri Apr 01, 2011 6:39 am
Forum: Taxonomy
Topic: Guianacara dacrya
Replies: 10
Views: 4436

Re: Guianacara dacrya

Hi Ingo,
habitat shows and specimens were taken in the Sawariwau River (Takutu drainage).
Cheers, m
by michi tobler
Thu Mar 31, 2011 3:29 pm
Forum: Taxonomy
Topic: Guianacara dacrya
Replies: 10
Views: 4436

Re: Guianacara dacrya

Hi all, we collected the species a couple of years ago. Pretty habitats, pretty fish;) https://lh4.googleusercontent.com/_h9i0wh-nUJQ/SZhq3bISfCI/AAAAAAAAC5g/eZGJuKbmVWs/s400/P2021857.JPG https://lh5.googleusercontent.com/_h9i0wh-nUJQ/SZhqg4rF6_I/AAAAAAAAC48/PwSAo9UyPt0/s400/P2011814.JPG Cheers, m
by michi tobler
Fri Feb 11, 2011 10:09 am
Forum: Central American Cichlids
Topic: Cichlids from México
Replies: 24
Views: 3500

Re: Cichlids from México

Thanks Michi, I have them from a shop they where labeled as Astyanax bimaculatus, That was the only thing i know about them. They are also older than the fish in the first picture. Sorry Willem, Yes, talk about Cichlids on a cichlidforum is also a good idea ;) And your movie is amazing 8) Hi Michae...
by michi tobler
Fri Feb 11, 2011 9:19 am
Forum: Central American Cichlids
Topic: Cichlids from México
Replies: 24
Views: 3500

Re: Cichlids from México

Sorry Willem....
@Michael: I'd say it's the same species. Where is it from?
Cheers, m
by michi tobler
Fri Feb 11, 2011 8:17 am
Forum: Central American Cichlids
Topic: Cichlids from México
Replies: 24
Views: 3500

Re: Cichlids from México

This is based on older taxonomy. Most authorities on Central American fish (backed by phylogenetic evidence) agree that A. fasctiatus is restricted to South America. Mexico has three species of Astyanax. A. mexicanus in the North, A. aeneus in the southern portion, and A. altior on Yucatan. A. arman...
by michi tobler
Thu Feb 10, 2011 10:41 pm
Forum: Central American Cichlids
Topic: Cichlids from México
Replies: 24
Views: 3500

Re: Cichlids from México

DRE, A. fasciatus is a South American species.
Cheers, m
by michi tobler
Thu Feb 10, 2011 8:44 pm
Forum: Central American Cichlids
Topic: Cichlids from México
Replies: 24
Views: 3500

Re: Cichlids from México

Astyanax aeneus as well.
Cheers, m
by michi tobler
Thu Feb 10, 2011 3:55 pm
Forum: Central American Cichlids
Topic: Cichlids from México
Replies: 24
Views: 3500

Re: Cichlids from México

Hi Willem,
in this case it is definitely not A. mexicanus (which is a northern species), but Astyanax aeneus (in all cases). They can be differentiated relatively easily by the shape of the body and the head (and the distribution).
Greetings, Michi
by michi tobler
Thu Feb 10, 2011 10:41 am
Forum: Central American Cichlids
Topic: Cichlids from México
Replies: 24
Views: 3500

Re: Cichlids from México

Hi Willem,
great footage (especially the Hypsophrys shots from Nicaragua!). Where did you shoot the Astyanax? I might be able to identify them.
Cheers, m
by michi tobler
Fri Jan 07, 2011 5:07 pm
Forum: Taxonomy
Topic: Vieja
Replies: 13
Views: 4962

Re: Vieja

Hi all, just a quick comment. While Ingo's remark about competing scientists making things complicated sure had a kernel of truth, I am afraid that the situation isn't that simple. Central American cichlids, particularly the Vieja/Therpas and the "Cryptoheros" s.l. groups, have a quite complicated e...
by michi tobler
Tue Nov 30, 2010 8:48 pm
Forum: Cichlidarium
Topic: tuba and company
Replies: 78
Views: 21536

Re: tuba and company

Very nice! I just recently looked at your pictures that illustrated that article I once wrote. Stunning fish!
Cheers, m
by michi tobler
Wed Oct 20, 2010 10:07 am
Forum: Central American Cichlids
Topic: Fishing Trip + ID
Replies: 17
Views: 3879

Re: Fishing Trip + ID

Oh... I'm sorry... I always get sidetracked when there's talk about nice prawns. You should be able to get shrimp in the rivers (several species in your area). Baited traps at night do the trick.
Cheers, m
by michi tobler
Wed Oct 20, 2010 9:49 am
Forum: Central American Cichlids
Topic: Fishing Trip + ID
Replies: 17
Views: 3879

Re: Fishing Trip + ID

In Peten, it will be a different but similar species of shrimp, M. acanthurus....
by michi tobler
Mon Oct 18, 2010 10:03 am
Forum: Central American Cichlids
Topic: Fishing Trip + ID
Replies: 17
Views: 3879

Re: Fishing Trip + ID

Provided you are on the Pacific slope, the shrimp seems to be Macrobrachium tenellum.
Cheers, m
by michi tobler
Wed Oct 13, 2010 1:06 pm
Forum: Taxonomy
Topic: Simple question
Replies: 4
Views: 1396

Re: Simple question

Hey Mack, do you mean the standard deviation or derivatives? I don't think there is such a thing as a standard derivative; except in the sense that there is some basic derivatives for simple functions that students are forced to learn in calculus.
Cheers, m

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