Peukje of Becks?
Help mee deze ID-puzzel op te lossen!
- Zeelt-20 (Peukje) en Zeelt-32 (Becks) lijken enorm op elkaar.
- Toch zijn er ook wat verschillen, al veranderen littekens en vlekken door de jaren heen.
- Hieronder kun je aan de hand van foto's en filmpjes de dieren met elkaar vergelijken.
- Serieuze reacties op de onderzoeksvraag zijn welkom: "Zijn dit dezelfde of verschillende dieren?" Mail me s.v.p.
Please help solve this ID-puzzle!
- Tench-20 (Peukje) and Tench-32 (Becks) look very much alike.
- There are some differences, though.
- Take a look at the photographs (and films below) and see how they match or differ from eachother.
- If you have a serious answer for me regarding the ID of these animals (this animal), please email me.
Details of the animals to take notice of before you decide which is which:
- Darkly coloured patch on left cheek (enlarges each year)
- Thickness at base of tailstock
- Nicked dorsal fin (in 2013 only the top, after sept. 2014 also at the base)
- 'Nipple' (small protrusion) on tip of dorsal fin from 2014 onwards
- Queerly formed mouth (on all occasions)
- Left pectoral fin; either 'dolphinlike' (Z-32 in 2014-2015) OR with a big tear (Z-20 in 2013). This could differ each year, if tears in fins heal up. It also differs if the fin is kept close to the body.
- right pectoral fin; either no tear at all OR with a big tear (Z-20 in 2013). This could differ each year if tears heal up.It also differs if fin is kept close to the body.
- 'Both individuals' (if that is the case) show quite easygoing behaviour towards the snorkelling researcher
- If in doubt with this tench: check the strangely formed mouth! That's quite a unique feature.
Tench 20 (peukje):
- First seen on 31st july 2013, eating a cigarette filter ('peuk') and then spitting it out.
- According to the filmfootage, the Smoelenboek-page below was made:
(legenda: blacked out parts of a fin mean there is a tear/a part is missing)
- Is a male (first erroneously called Becky, now Becks). Recognizable protruding musclemass just above the belly-fins in the mating season makes it a male.