A WAY TO RAISE RANCHU ● CULLING ROUND - III

Third Culling Round - Thee Month After Hatching

The ranchu size should be at around 2 1/8 in (55 mm). This culling is done by looking at the side of the fish. On the third month the back and the tail peduncle has taken a shape and can be clearly evaluated.

The focus of this round of culling is on the position of the tail towards the tail peduncle, and the shape of the back. This will influence the way the ranchu swims.

The fish should be selected for their smooth curved backs similar to a long Japanese boxwood comb. 

The tail core (midrib) should stand up and form an angle of 90° to 120° in relation to the tail peduncle. While looking for a smooth curved back, do not overlook the fish charm. If the center of the back is raised, it will flatten with time, as the back thickens in older ranchu.

Standard to follow:

Negative Points To Look For From the Side:

1. tail core is dropped below 120°
2. tail core is less than 90°
3. pinched tail core or has a bump (a), tail side lobes are positioned too forward (b)
4. Tail peduncle is too flat (a) and has a bump (b)
5. tail peduncle is crunched, no smooth curve

 

During the Their Round 

This time attention is on the side view of the tail core (midrib) and the back profile. The number is reduced to about half or 2/3rds. Again, while looking for a smooth back, do not overlook the fish charm. Flatter or rounder backs can be overlooked if a tail core looks right and the fish looks and swims good from above.

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Links to published chapters:

● INTRODUCTION
● WATER
● NOTES ON GREEN WATER & WATER CHANGE
● WATER TEMPERATURE
● AERATION
● SUNLIGHT AND SHADE
● CONTAINERS FOR RAISING RANCHU
● FOOD
● FEEDING REGIMENT
● BREEDING & SPAWNING
● RAISING & GROOMING FRY
● GROOMING KUROKO AND TOSAI
● CULLING
● SELECTION METHODS
● CULLING ROUND - I
● CULLING ROUND - II
● CULLING ROUND - III
● CULLING ROUND - IV
● CULLING ROUND - V
● FORSEEING RANCHU CHANGES IN THE FUTURE

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A WAY TO RAISE RANCHU ● CULLING ROUND - II

Second Culling Round - One Month After Hatching

The fry size should be around 6/8 in (20 mm). The selection is performed by looking from above. Tail is opened very clearly and tail core can be easily determined.

Main objective during the second round of culling is still the tail shape and the tail core. Tail core effects future development of the tail and must be payed special attention. During this round the fish number can be reduced from one third to one half.

Basic tail standard to follow:

Negative Points To Look For From Above:

1. tail bracelet comes to a point
2. tail core is rigid and thick (a), no tail shoulders (b) 
3. peduncle is not curved (a), tail tip is deformed (b) 
4. tail core is not in the middle
5. tail core overlaps (a), tail shoulders are not symmetrical (b)
6. tail shoulders indented, not open (a), tail core is pinched (b), bump on peduncle (c)

 

During the Second Round

The focus must be on the tail core. It requires a 100% screening. Usually the number is reduced from one third to a half.

_________________________________________________________________________________

Links to published chapters:

● INTRODUCTION
● WATER
● NOTES ON GREEN WATER & WATER CHANGE
● WATER TEMPERATURE
● AERATION
● SUNLIGHT AND SHADE
● CONTAINERS FOR RAISING RANCHU
● FOOD
● FEEDING REGIMENT
● BREEDING & SPAWNING
● RAISING & GROOMING FRY
● GROOMING KUROKO AND TOSAI
● CULLING
● SELECTION METHODS
● CULLING ROUND - I
● CULLING ROUND - II
● CULLING ROUND - III
● CULLING ROUND - IV
● CULLING ROUND - V
● FORSEEING RANCHU CHANGES IN THE FUTURE

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