Spawning report: CW010

Name

Scientific Name of Fish: Corydoras sp. CW010

Hobby Name of Fish: Gold laser croy

Method of Reproduction: Egg Scatterer

Number and Gender Distribution of Parents: I suspect 2 females 5 males, but I'm not 100% sure.

Origin of Parents: Tank raised.

Approximate number of eggs or fry: They tend to drop anywhere from 10-30 eggs a day over a few days, then take a break for a while.

Date of Hatch or Birth: May-June

Date of Free Swimming If Hatched: June & July

Approx. Number of Fry at 30 Days: At least 20 of the older fry, more at smaller sizes.

Approx. Number of Fry at 60 Days: 20+

Aquarium Conditions:

pH (0 to 14): 6-7

General Hardness (ppm)

Average Temperature (F): 68-76 - usually around 74 this time of year. I do not heat these fish.

Salinity (if brackish or marine)

Average Nitrate (ppm)

Aquarium Size (L X W X H and Gallons): 20 gallon long

Water Source: Tap and RO mix

Water Changes (how much and how often): 50% every 3-4 weeks.

Filtration System(s): Air driven sponges.

Additives (Salt, iron, etc.)

Décor (Please include all that apply):

Live Plants

Leaves

Substrate: Thin layer of sand

Lighting Type and Timing: LED strip, 12 hrs/day

Food Fed to Parents and How Often: mix of flake, pellet, frozen, live blackworms, decapsulated brine shrimp eggs, daily.

Food Fed to Fry and How Often: Microworms, vinegar eels, decapsulated brine shrimp eggs.

These guys do seem to be influenced by weather and rain. Even if I don't do a water change, they will often spawn when there's a good rain. They tend to spawn most actively in the fall, but the weird weather this year has landed me with some atypical spring and summer egg drops. Sometimes they spawn without water changes or rain, too. They tend to deposit eggs where they're easy to spot and remove (scraping off the glass with a fingernail) and they don't tend to eat them (at least not immediately). I frequently catch the females holding eggs in their pelvic fins, which is a fun thing to witness.