Jump to content


Ctenogobius shufeldti & Microgobius gulosus


  • Please log in to reply
31 replies to this topic

#21 Guest_gerald_*

Guest_gerald_*
  • Guests

Posted 21 July 2014 - 05:02 PM

OK that sounds pretty convincing; good news for potential aquarium breeding. The presence of schools of juveniles too small to have swum (?) up the canals from the coast suggests the fry don't need much salinity (unless there's some oddity like small saline springs in the lake).

The article does mention that the young school in the water column along the shoreline after leaving the nest and have fully formed fins and eyes, matching the positions in adults. They are not clear on whether there is a planktonic phase or not, but it seems to imply that there isn't much of one and that they transform into miniature versions of the adults rather quickly.



#22 Guest_mzokan_*

Guest_mzokan_*
  • Guests

Posted 21 July 2014 - 06:02 PM

Good point Gerald. I've never heard of any springs in Lake Okeechobee, but there are several in the upper St. Johns River system where there are also FW populations of clown goby. Because Lake O is on a limestone base, as is most of Florida, it does have hard water. It is probably a good idea to elevate the ions in the water should someone attempt this.

#23 Guest_mzokan_*

Guest_mzokan_*
  • Guests

Posted 21 July 2014 - 07:58 PM

I did find a source that confirmed there is a larval phase, it does not say for how long though

#24 Guest_mikev_*

Guest_mikev_*
  • Guests

Posted 23 July 2014 - 08:46 AM

Presence of a larval phase is not significant to breeding by itself.... the question is how large is the larvae and what it eats. Some larvae can eat artemia, some can eat paramecium...
Any info on the egg size or larvae size there?

#25 Guest_mzokan_*

Guest_mzokan_*
  • Guests

Posted 23 July 2014 - 10:06 AM

Check this link: http://books.google.... larvae&f=false

scroll down to page 2067

#26 Guest_gerald_*

Guest_gerald_*
  • Guests

Posted 23 July 2014 - 11:47 AM

Looks like a very small mouth on that very small (3 mm) M. gulosus in the Richardson book..

#27 Guest_mikev_*

Guest_mikev_*
  • Guests

Posted 23 July 2014 - 02:03 PM

Really need to find the fish and try... but 3mm is not too bad, goby mouth at least in rhinos seems stretchable, infusoria would work fine if the larvae accepts it and even artemia might.

Not that it says that 3mm is the size at birth....

#28 Hydrophilus

Hydrophilus
  • NANFA Member
  • Syracuse, NY

Posted 30 March 2016 - 03:28 PM

Anybody try keeping this species yet? I hadn't heard of it before, but it sounds ripe for a captive breeding attempt.


-Eric C. Maxwell

DEC Rare Fish Unit, Watertown, NY


#29 dredcon

dredcon
  • NANFA Member

Posted 30 March 2016 - 06:44 PM

Anybody try keeping this species yet? I hadn't heard of it before, but it sounds ripe for a captive breeding attempt.

Not keeping them but I do see lots of goby larvae in nearly fresh water (less than 5ppt). There are some yet to be ided to species gobies mixed in this sample from last week collected in the upper Barataria estuary(excuse cell phone pic) . I've been seeing lots of very fecund female naked, darter, and clowns in our seine samples over the last few weeks. Even in 1 or 2 ppt the female naked gobies were ready to pop last week.

Attached File  20160324_190426-1.jpg   74.22KB   0 downloads

The larval gobies have a prominent swim bladder. There is a misquito larvae in there for size comparison.

#30 Hydrophilus

Hydrophilus
  • NANFA Member
  • Syracuse, NY

Posted 31 March 2016 - 08:17 AM

Nice pic! Is that a pipefish in that sample too? And this sample is from Louisiana, correct? Do you think the gobies are spawning in freshwater (or nearly freshwater)?


-Eric C. Maxwell

DEC Rare Fish Unit, Watertown, NY


#31 dredcon

dredcon
  • NANFA Member

Posted 31 March 2016 - 06:25 PM

Nice pic! Is that a pipefish in that sample too? And this sample is from Louisiana, correct? Do you think the gobies are spawning in freshwater (or nearly freshwater)?


Yeah it's a Gulf pipefish. These samples were taken just south of lafitte louisiana. I think there are gobies spawning in less than 5ppt and the naked gobies last week were in less than 2ppt and they were definitely in spawning condition. I don't know if they require more salt at some point in their ramp up to spawning but they were spawning in an area that has been pretty fresh for at least a month or two.

#32 dredcon

dredcon
  • NANFA Member

Posted 31 March 2016 - 06:28 PM

Other fish in that sample were gizzard shad, inland silverside, some blenny species, and maybe a skilletfish.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users