Thursday, 28 January 2016

Crow trying to steal my fish (plus round goby collecting)

Ok this is kind of old stuff, but i thought it would be interesting to share. While i was collecting fish in Kiev (former Ukraine) on Dnepr river,  this guy tried to steal all my catch.  Those are my fish inside that big plastic water bottle.  I cut a hole at the top, so i could get fish and and out easily.

The crow kept sticking his head inside, trying to get at the fish.  I let him do it for a few minutes.  It was kind of interesting to watch him.  He finally gave up and flew off

Monday, 18 January 2016

Small eyed stingrays of South America

Yes, these guys are flat. Not only are they flat, but they are also very lazy. No, they don't do much compared to your typical Potamotrygon sp you see all the time. They are more of an ambush predator. And, yes, they do get huge. And I do mean huge. Like over 4 week in diameter sometime for some species. They pop up sometime in aquarium trade under such names as “apple ray”, “china ray”, “coolie ray” or “eyebrow ceja ray”. But not a lot of people keep them due to their size and to the fact that they are somewhat difficult to keep. They are difficult to wean onto frozen foods and they can not be mixed with large eyed Potamotrygon species because they will either starve or be bullied to death.

Paratrygon aiereba

These guys are your typical ambush predators, despite their small eyes. They are also known as “eyebrow ceja ray”, “manzana ray” or “apple ray”. I guess, they do look like apples somewhat. They reach about 130cm in diameter and can way up to 60 kg (that's over 130 pounds if you are behind on SI system). There is only one specie in Paratrygon genus. These stingrays are found in Brazil, Peru, and Colombia.

This has a broken tail. It should be much longer

These photos are kind of sad, but you can see how huge they get

Friday, 15 January 2016

Asian freshwater stingrays from the Internets

Every loves freshwater stingrays, unfortunately most of the rays in the hobby are the South American Potamotrigon species. Surprisingly, there is a huge number of Asian fresh water species that don't get as much attention as they deserve. They rarely show up in US or in Europe in aquarium trade. It might be something to do with the facet that they are much more fragile, more difficult to feed (they have smaller mouth), and require much more space due to their very long tails.

Most of the Asian species belong to Himantura or Dysiatis genus. There is some discussion as to whether they are brackish or pure freshwater. I think that most of the Himanture sp are pure freshwater, but Dysiatis are a mixed bag.

The most famous Aisan whiptail ray is Himantura chaophraya or the gian freshwater ray. It is one of the biggest freshwater fish right now. There was one guy from Singapore a few years who had it in his pond, not sure what happened later. I don't know any other ones in captivity, but it would be super cool if one of the public aquarium got one.

Here is the new born giant ray.  Yes they are born small

Himantura chaophraya in captivity somewhere

Another captive giant stingray, notice the broken tail

And now for some normal sized rays. These guys actually show up in aquarium trad from time to time. So if you get a chance, definitely buy them. A word of warning, you CAN NOT mix them with South American species (well maybe only with small eyed rays such as Paratrygon sp, Heliotrygon, and Plesiotrygon). They are best kept in species only tank, as they have very small mouth and can easily starve or be bullied to death.

Himantura oxyrhynchus or the leopard stringray (notice very long tail)

Himantura krempfi - another leopard ray

Himantura signifer - white ribbon ray

Not a good idea to feed it goldfish, but someone tried

Himantura kittipongi- don't know much about this guy.  i could not even find live pics of him

Makararaja chindwinensis -not much info on this guy either.  I think he is from Maynamar

Some un-identified stingrays in a box

Dysiatis sabina-  These guys are the only freshwater ray in North America (st. John's River in Florida).  I know he is not from Aisa, but i added him here to show that he is closely related to the Asian ones.  I have seen this guys for sale in US, but from anecdotal info, they are more suited for ponds because they produce an insane amount of urea and can poison the whole tank.

Tuesday, 5 January 2016

Pier Fishing

I got bored so I went pier fishing. Since I had no fishing rod, I had to rent one.  I got bored so I went pier fishing. Since I had no fishing rod, I had to rent one. The first thing that surprised me were the pelicans. I have never seen one in real life before. These 2 guys were huge. And they were sitting there, waiting for people to feed them. They were really tame, you could approach one with a fish and they would open their mouth for you to put fish in their pouch.

Here is the first fish I caught. I am not sure what it is. But it looked really bright. I gave it to one of the pelicans.