Spawning report: Xenoteca doadrioi Etzatlan, Mexico

Here are the Xenotoca doardrioi colony breeding.

Spawning Report:  Xenoteca doadrioi Etzatlan, Mexico

Name:    John Satterlee

Scientific Name of Fish:  Xenoteca doadrioi Etzatlan, Mexico (CARES)

Hobby Name of Fish:  San Marcos Redtail Splitfin

Method of Reproduction:  Livebearer

Number and Gender Distribution of Parents:  1 male and 2 females

Origin of Parents:  Tank raised, from PVAS auction several months ago, from John Mangan

Some background information about the Goodeid Xenotoca doadrioi

Goodeids.  Goodeids are “named after the first known genus Goodea, that was described by David Starr Jordan in 1880 in honor of George Brown Goode” a “colleague and US American ichthyologist, who worked most of his time as a museum administrator.”  http://www.goodeidworkinggroup.com/classification

According to the font of all knowledge Wikipedia, many Goodeids are referred to as splitfins.  “The name "splitfin" comes from the fact that, in the male fish, the anterior rays of the anal fin are partly separated from rest of the fin.”  “Goodeid fish have internal fertilisation, with males positioning themselves with a flexible part of the front anal fin, separated by a notch, which makes up the andropodium. Embryos hatch out of the egg within the ovarian follicle, and possess trophotaeniae, ribbon-like structures that emerge from the cloaca in front of the anal fin, on the ventral surface of the juvenile. These allow the absorption of nutrients within the ovary (matrotrophy), and are shed by juveniles shortly after birth. Female goodeids do not store sperm, and so a copulation event must precede each pregnancy.[6]”  https://en.wikipedia.org/wiki/Goodeidae

Xenotoca species:  There are currently five Xenotoca species I could discern:  Xenotoca melansoma, Xenotoca eiseni, Xenotoca doadrioi, Xenotoca variata, and Xenotoca lyonsi.  The latter species was named in 2015 after ichthyologist Dr. John Lyons at University of Wisconsin, Madison.  Of these five species, four are listed on the CARES priority list.  https://caresforfish.org/?page_id=336 including Xenotoca doardrioi.

Approximate number of fry:  15

Date of Hatch or Birth:  June 9, 2023

Date of Free Swimming If Hatched:  N/A

Approx. Number of Fry at 60 Days:  15-ish

Aquarium Conditions:

pH:  7.2

General Hardness:  150 ppm

Average Temperature (72-76 F)

Salinity:  none

Average Nitrate:  < 40 ppm

Aquarium Size:  standard 20 gallon

Water Source:  Rockville MD tap water with Seachem Prime

Water Changes:  80% once a month

Filtration System:  sponge filter

Additives:  Crushed coral

Décor:

Live Plants:  Valisneria, moneywort, Tanganikan Val

Small flower pots and easter island statue to provide hiding spots and break up lines of sight

Substrate:  Hope depot pebbles

Lighting Type and Timing:  Home Depot light, 12 hrs on/12 hrs off

Food Fed to Parents and How Often:  Tetra Color Tropical Flakes morning and evening.  Freshly hatched baby brine shrimp every 1-2 days. 

Food Fed to Fry and How Often:  Finely ground dry fry food (Aquarium Coop) morning and evening, freshly hatched baby brine shrimp every 1-2 days.

Additional comments:  They are colony breeding very nicely for me now.

This is one of my favorite livebearers the colors on the males would make african cichlids jealous

The male was fired up today.

More fry born April 24 2023

Fry May 24 2023

The parents.