Search found 2746 matches

by Bas Pels
Fri Sep 25, 2020 7:32 am
Forum: Taxonomy & Science News
Topic: Ictalurus punctatus can use body muscles for suction feeding
Replies: 2
Views: 74

Re: Ictalurus punctatus can use body muscles for suction feeding

On the one hand interesting altough not practical for use in a tank. But on the oither hand, studying 1 species of catfish, comparing the results with 1 species of non-catfish, and drawing conclusions for asll catfish does seem a logical error. One would expect to have studied a few more species bef...
by Bas Pels
Thu Sep 24, 2020 1:33 pm
Forum: South American Catfishes (Loricariidae - Plecos et al)
Topic: About the choice of partner
Replies: 6
Views: 243

Re: About the choice of partner

Following Jools´will have furhter the advantage of getting offspring from more males, and thus having a broader gene-pool in the next generation.
by Bas Pels
Tue Sep 08, 2020 8:02 pm
Forum: What is my catfish?
Topic: Walmart Alumnus
Replies: 25
Views: 1520

Re: Walmart Alumnus

I can only agree with Victor. To add a few more numbers, an average mammal needs 10 times more food then a same sized reptile, and many a catfish is much slower than this reptile. However, ´a mammal´ does not include humans. The thing is, in a normal mammal, the kidneys consume the most of their ene...
by Bas Pels
Sat Aug 29, 2020 7:52 am
Forum: South American Catfishes (Callichthyidae - Corys et al)
Topic: corydoras for fast water
Replies: 5
Views: 568

Re: corydoras for fast water

C robinae could be a good suggestion. I once read the stripes in the tail suggest they need a lot of current.
by Bas Pels
Mon Aug 10, 2020 1:05 pm
Forum: What is my catfish?
Topic: Gibbiceps?
Replies: 2
Views: 579

Re: Gibbiceps?

gibby 100 % certain
by Bas Pels
Wed Aug 05, 2020 9:56 pm
Forum: Tank Talk
Topic: About filtration
Replies: 70
Views: 15363

Re: About filtration

Apart from nitrogen, it looks like fish, at least some species, produce pheromones, reducing the ability of conspecifics to grow. From my own experience, a single fish in a tank will grow, whether I change water or not. If there are more in the tank, growth will reduce if I don't change water, even ...
by Bas Pels
Mon Aug 03, 2020 10:56 am
Forum: Tank Talk
Topic: About filtration
Replies: 70
Views: 15363

Re: About filtration

I followed the lead but the main reference is to a book / which I would have to buy. Not the best way to convince me. Aparet from that, she wrote that people, even if they have a planted tank, misunderstand the amount of nitrogen taken up by plants. I must say - it is rather easy to estimate this am...
by Bas Pels
Thu Jul 30, 2020 12:47 pm
Forum: Tank Talk
Topic: About filtration
Replies: 70
Views: 15363

Re: About filtration

As ppm stands for parts per million, one would assume it refers to a molar - 1 micromol of something per mole of something else. The reality is different, ppm is most often read, by aquarists, as mg per liter. A millionth of the mass I got to admit, it is rather distracting, after all, a liter of wa...
by Bas Pels
Tue Jul 28, 2020 7:48 am
Forum: South American Catfishes (Callichthyidae - Corys et al)
Topic: Adipose body on pectoral fins of sexually mature Dianema and Hoplosternum?
Replies: 23
Views: 1917

Re: Adipose body on pectoral fins of sexually mature Dianema and Hoplosternum?

I think you intent us to guess what adipose would mean. In Dutch the adipose fin is called vetvin, which would translate as 'fat fin'. This would make me translate adipose as thikened, fatty - and in Hoplosternum the first finray in the pectoral fin is thickened. Problem is, in Dianema I neve saw th...
by Bas Pels
Sun Jul 26, 2020 8:53 am
Forum: Taxonomy & Science News
Topic: Domestication of Pseudopimelodus mangurus
Replies: 1
Views: 669

Re: Domestication of Pseudopimelodus mangurus

I wonder what the purpose of these bred fishes is. Are they to be reintroduced or are they to replace collection for food from the wild? If it is the first, one would want the fish to grow approximately with the same speed as ios oberved in the wild Certainly not twice or three times as fast. The th...
by Bas Pels
Sat Jul 25, 2020 8:26 am
Forum: What is my catfish?
Topic: Gibbiceps?
Replies: 13
Views: 1196

Re: Gibbiceps?

I am not saying it's not a gibby. We certainly need better pictures.
by Bas Pels
Thu Jul 02, 2020 7:36 am
Forum: What is my catfish?
Topic: Help Indentifying
Replies: 5
Views: 1245

Re: Help Indentifying

Thew white tips in the tail say to me Ancistrus, most likely the common A cf cirrhosus

The breed easily
by Bas Pels
Thu Jul 02, 2020 7:32 am
Forum: South American Catfishes (Callichthyidae - Corys et al)
Topic: Getting rid of snails in Pygmy corydoras tank
Replies: 12
Views: 1547

Re: Getting rid of snails in Pygmy corydoras tank

To me, the main reason not to use chemicals to get rid of snails is, when it works, you are facing a tank with a lot of dead bodies - bad for your water. Besides, in a growing out tank, you need to feed a lot, and not all is eaten. In fact, that could very well be the reason why you have so much sna...
by Bas Pels
Wed Jul 01, 2020 4:38 pm
Forum: Speak Easy
Topic: Fish Planner
Replies: 12
Views: 4978

Re: Fish Planner

This is spam
by Bas Pels
Tue Jun 30, 2020 7:44 pm
Forum: South American Catfishes (Callichthyidae - Corys et al)
Topic: Hoplo Sexing
Replies: 12
Views: 1224

Re: Hoplo Sexing

Congratulations

If boys can be recognized at this size, than your first one must definitely be a girl.

First get them to mature, then hope for fry.
by Bas Pels
Tue Jun 30, 2020 7:26 am
Forum: Taxonomy & Science News
Topic: The true meaning of “natalis” in the name Ameiurus natalis
Replies: 8
Views: 587

Re: The true meaning of “natalis” in the name Ameiurus natalis

ichthyologist's heart belonged to a lady named Natalie and the catfish somehow reminded him of her... if this did happen to be true then it would be nataliei , I think thats how it would go. I would think nataliensis As far as I know, -i is for male names and -ensis for female names. And as Natalie...
by Bas Pels
Sat Jun 27, 2020 8:09 am
Forum: South American Catfishes (Callichthyidae - Corys et al)
Topic: Hoplo Sexing
Replies: 12
Views: 1224

Re: Hoplo Sexing

Assuming it stays this way, She would be a girl. But as said, (s)he will need some growing to do.

I could not say wen these plates start growing in a male - @ 50 % or 80 % of aldult length.

I do agree however, it's a beautifull specimen. But then, I'm a bit biassed regarding Hoplos
by Bas Pels
Fri Jun 26, 2020 7:39 pm
Forum: South American Catfishes (Callichthyidae - Corys et al)
Topic: Hoplo Sexing
Replies: 12
Views: 1224

Re: Hoplo Sexing

I think it's too small to say. It's and and a half inch (not counting the tail) and it might grow another inch.

Males get overlapping plates on their breast, further the brest fin spines might become curved. Basically the same things as all the other species in Hoplosterinae, but more subtile.
by Bas Pels
Wed Jun 24, 2020 7:53 pm
Forum: Tank Talk
Topic: How to determinate minimale tank for catfish ?
Replies: 6
Views: 1723

Re: How to determinate minimale tank for catfish ?

As my smallest tank is 225 liters, I never worry about sizes for small fish.
by Bas Pels
Wed Jun 24, 2020 7:48 am
Forum: Tank Talk
Topic: How to determinate minimale tank for catfish ?
Replies: 6
Views: 1723

Re: How to determinate minimale tank for catfish ?

For catfish this rule is often used - for quiet catfish. I would not use it for active ones, such as Pangasius. Among cichlid keepers the rule is often 8 L * 2L *2L because these are much more active, and much mnore agressive. Still for very agressive species such as Parachromis dovii I would sugges...